Wide-Angle Lens for Digital Camera broader perspective

 Digital cameras with wide-angle lens and camera, as the main purpose is to expand the shooting range. For example, in a small space or small room, with wide-angle lens to the lens can not solve the ordinary footage.

 Digital cameras with wide-angle lens, a strict should be called "Wide-Angle Lens," because the so-called "Lens" attached to the original only in the lens. Different digital cameras to attach a different angle lens, such as home digital video camera lens diameter 37 mm, 43 mm, etc., professional <digital camera lens with 52,58,72 mm and so on. Wide-Angle Lens models the manufacturers are not the same identity, such as Panasonic's 4307, that can be attached to the 43 mm digital camera lens, the wide-angle multiple of 0.7 times the original lens that can shoot the scene 70% smaller , equivalent to the original lens range 1.43-fold. Sony and Panasonic is different from its wide-angle lens attached logo and Panasonic just turn, such as 0637 table 0.6 of its wide-angle multiple times, can be attached to 37 mm lens on a digital camera to use.

Using wide-angle lens attached, although you can expand the shooting range, but there are some image quality loss. Such as digital cameras with wide-angle lens attached, the four corners of the screen will be a slight blurring, if wide-angle lens without hood, very prone to faint light, like Sony's 0637 consumer-grade wide-angle lens is simply no additional installation hood of the interface, so, if not very need, the use of wide-angle lens attached should be cautious.

Why digital camera DV function will take time limit

Using digital video cameras we found that many models in the continuous shooting time is limited, why is it so? Let's analyze why.
One reason is the storage format issues
Most of the digital machine is that the memory card formatted with FAT32 format, FAT32 only supports 2GB maximum single file. For digital camera images, a single file larger than 2G may be small or non-existent this problem. But for continuous shooting video, its a single video file size is directly related to shooting for a long time, when the continuous shooting time is very long, single file will be larger than 2G, so the camera will automatically stop recording, you need to press next record button to start a new file.
In fact, the situation in the use of digital camera memory card also, but the vast majority of cameras in a single file than 2G, it will automatically generate a new file to achieve a continuous record. In fact digital cameras should also be done automatically generate a new file feature, but manufacturers do not do it, such as Canon 7D, etc. can be recorded continuously for a long time.
 The second reason is the product tax issues
It is said that the foreign products for cameras and camcorders tax is not the same, lower taxes cameras, camera products, high taxes, the product is defined as a continuous camera recording video 29 ​​minutes 59 seconds for the sector, higher than this time as a camera products, not lower than this time. Some cameras have video recording capabilities of the product, if its video recording features over 29 minutes will be charged higher taxes, so in order to avoid multiple taxation problems, let the camera can record video in 29 minutes time control.
Whatever the reason, the camera is continuously recording the video should be able to do limited time, or set time limits on human factors. In addition, the camera is the camera, if you completely replace the camera, it is estimated the manufacturers still do not want to do that.

Video capture tool for one of Panasonic GH2 Introduction

Panasonic DV for people who play are not familiar with, and today we talk of a digital camera is the Panasonic GH2, in our "digital cameras", said digital camera feature seems to be some "stray," but we are talking about today Although the GH2 is a "camera", but it's "camera" function is very powerful, let's find out.
 GH2 is not a "lonely one" is actually the predecessor in GH2, Panasonic has a model on a similar product for the GH1, GH1 in mainland China but this is not for sale. But even without selling in mainland China, and in the shop in a physical store, this model is not uncommon, we buy this "camera" and a big reason, is optimistic about its HD video recording capabilities, so we Taobao to find if there is a lot of GH1. Now GH2 after birth, Matsushita to this product are sold to the Chinese mainland.
 GH2 GH2 although its origin and history more powerful camera, but its position is digital camera, instead of the camera, its origin is micro 4 / 3 system. In fact, 4 / 3 system is the sensory area of ​​the image transfer is 4 / 3 inches, the standard was first born in Olympus, and later because of the development of DSLR, 4 / 3 system marginalized. The lybs cooperation with Panasonic, a new standard of "micro 4 / 3", because the lower body weight and other reasons, so that 4 / 3 are again light. GH2 appearance, let us see the power of digital cameras in the camera's powerful.
 Panasonic Panasonic GH2 advantage in the video still has a comparative advantage in particular the latest high-definition video format AVCHD encoding technology, and Panasonic cameras over the years of production experience, the video recording technology, "grafted" to the digital camera is not difficult things, this may also be GH2 HD video shooting in a relatively strong performance of the main reasons. As the predecessor of the GH1 GH2 to everyone's surprise, not born to be sought after GH2. The main advantage of GH2, or it comes to home video recording capabilities, and enhance the function of another, such as the unique continuous auto focus, interchangeable lenses and can record multiple video formats.
Please pay attention: video capture tool for introduction of two Panasonic GH2

Using the remote control to determine the failure DV

Now virtually all of the appliances are equipped with remote control, whether it is TV, DVD player, air conditioning, DV, etc. Almost all of the appliances are inseparable from the remote control, especially now that a lot of flat-panel TV unit with only one power switch, or just take in a simple key, the vast majority of TV functions, remote control will need to achieve, therefore, an increasingly important role of the remote control if lost or broken remote control, really trouble. We often encounter with a bad case of the remote control, but very difficult to determine the remote control is not a problem, in the end is the battery is dead, or have other problems? Now to tell you about using a DV camera to determine the quality of the remote method.
First, we turn the power DV, the DV into the shot (camera) mode, then the suspected problem on the remote control transmitter, which is often said that the remote control in front of the face in front of a DV of electrical camera, press a button while watching the LCD screen to see DV on the remote control transmitter has no "little light" in flash, if you can basically determine the normal remote control, remote control battery is also no problem. If the transmitter's no "little lights" lit or flashing, indicating the remote control problems, such as the battery is dead or the power contacts have bad problems, you can clean the battery compartment and replace the battery of electric shock to try a new battery. Similarly, if the remote control of one or a few key failure can not be used, this method can also be used to judge.

In fact, the remote control press the function key, the transmitter emits infrared light to be sent to the remote device control information, but we can not see infrared light, but DV can "see" infrared light emitted by remote control, so We use this principle, with the DV to see the working status of the remote control to determine whether the initial failure. In fact, really a lot of the usefulness of DV, to see how we use and use it.

Universal (GE) DV1 is a toy or DV

Recently, the production of aircraft engines boss cited General Electric Company (GE) out of a DV product, the model is called to do DV1. I do not know the reason because the world economic downturn, or something else, so GM is adding to the manufacturing industry to the DV. In fact, as far as I know GM's a lot of things, ordinary incandescent bulbs products have a common figure.
 DV1 special features
 DV1 SD card or SDHC card to record, too, and many similar products, the largest expansion of support for 32GB of storage. This little machine has a special East this comparison can, for example, in water depth of 5 meters safety, fell to the ground from a height of 1.5 m will not affect the shooting, also has industrial-grade dust. These features can be said is basically a "weather", and is really God, into the earth, the water is too difficult to learn. We can carry DV1 go diving, you can also put the DV1 on the beach, can also be used when the "hammer" ... of course, no one will come as a hammer to use with DV, but fell to the ground fell from 1.5 meters is not bad, if used in times of crisis people smashed head is no problem, at least not worry about DV will be broken.
 Looks like a lot of toys or can also
This is known as full HD this waterproof, anti-collision flash camera Mingzi called DV1, the words name does not have HD, but it can take a 1080P Full HD models, but from the very simple name. HD camcorders with 5.08 million effective pixel CMOS image sensor, 2.5-inch 230,000-pixel LCD screen, built-in USB connector, HDMI high definition output. From the chart we can see, this little thing with a USB plug their own, can not turn on the cable directly into your computer.
 Pictures and video recording format, and other
Record all kinds: static pictures 5MP (4:3) .3 MP (16:9) 8MP: 3264 × 2448, 5MP: 2592 × 1944, 3MP: 2048 × 1536, 2MP: 1920 × 1080, 0.3MP: 640 × 480
Video Recording: 1920X1080 30fps; 1280X720 60fps/30fps; 1440X1080 30fps; 640X480 30fps
The DV may be a variety of colors, look a bit like a relatively large head phones, and even "long as" a bit like a "cottage" goods. General DV1 has the ability to capture full HD video, each video recording time is 29 minutes. Why is this machine that the maximum recording time is 29 minutes? This in another article to explain.

Tripod in the camera's magical

Household are more compact and lightweight camera, tripod camera can be used according to their size of a proper election can be. Of course, the large number of relatively stable tripod of some, but its weight can not be ignored. If you do not ask, choose a small tripod tens of dollars you can. Buy a tripod must check whether the lock fastened, the head part of the left and right and up and down the rotation is smooth, not ebbed and flowed.
Use a tripod self: a tripod camera can not only shoot a stable image, self-timer can also be used. If we go out to play, can carry a tripod and camera remote control, so you can easily put the camera frame is completed, they used remote control cameras to shoot and zoom, then the camera's LCD screen can be flipped open and 180 degrees, so you can watch and take it easy.
 Film-like picture: many of the film camera will blur out the background or foreground to highlight the subject. We use a tripod to steady the camera can also shoot a similar shot, let the camera zoom in times of state, the shooting of the film blur the background or foreground effects to make the picture better mood.
 Candid weapon: more people in the shooting scenes such as the wedding ceremony, we all stood up to meet new people when you can lift the tripod to the camera is much higher, as they stand on a ladder, like to shoot, so you can easily photographed and shot less than others do not see the scene.
 Cater to stick with: travel hiking when tired, if you can easily stick some of the root, then fold up the tripod can be used as both a walking stick and rest when you can carry items to hang.

Three models of the pure 16:9 16:9 frame

With the popularity of flat-panel TVs and home of a large number of high-definition DV market, flat-panel TVs are 16:9 aspect ratio, which everyone is familiar with. New high-definition DV, because the high-definition video recording format, aspect ratio is 16:9, so for shooting high-definition DV format aspect ratio setting, the choice items can also be ignored, use the default settings. However, the previous standard definition format, digital cameras, and can take into account both SD and HD models can record it, you also need to understand some other aspects of knowledge about 16:9, or may be because the wrong setting, resulting in shoot out Before the video aspect ratio with the desired effect is inconsistent and bring regret.
 Divided into three modes 16:9
 16:9 is to capture and record video frame aspect ratio is 16:9, because our topic is "digital camera", so we are not at a 16:9 TV that thing, only that in the end when shooting digital camera to choose what kind of shooting modes, is shot to shoot 4:3 or 16:9. First we need to know, in fact, for the HD and SD cameras, the set of their film frame ratio in three ways: First, the pure 16:9; second extrusion 16:9; third masking type 16:9.
 Pure 16:9 mode
The so-called pure 16:9, about two situations: First, high-definition DV video shot in HD format should be pure 16:9. That is, if we use a high-definition format, digital camera, shooting video is HD format, that regardless of their record high-definition format, which, like the 1080 or 1920 * 1920 * 1280 * 720 and 1440, These videos are seen in the flat TV screen is normal 16:9 format. Second, the so-called standard definition format in pure 16:9. In fact, not in high definition will have a "pure 16:9 mode", there are pure SD 16:9 mode, the SD 16:9 we will in another article.
We can understand the following resolution 16:9 full-HD or pure, standard Full HD 1920 * 1080; HDV format 1920 * 1440; HD 720P standard 1280 * 720. The standard video resolution of the resulting "pure 16:9 mode", a digital camera can record standard TV formats and can play, there are some non-standard 16:9 we can not say.

Super SLR professional quality HD camera PMW-F3

Sony last year (2010) released a very powerful hand-held film production for high-definition video camera. In fact, if you say "for the film" production as saying that the PMW-F3 is the camera a bit derogatory, but the PMW-F3 or the camera does, because it is not using film, but the PMW-F3 position has indeed been high.
 PMW-F3 of the highlights of the high-end positioning PMW-F3 to say the highlight, as it PMW-F3 professional features. On the one hand, the PMW-F3 is because of its position is "movie" machine, the camera where it should be very high-end products, and stronger than the multi-professional level, let alone over a product and civilian. The use of the machine because as a "film", so it's operational aspects of the camera is more complex than the pure number, you can also use the film lenses, etc., because we will not contact or contact with these very little chance, is not to say, just know that there is such a model on it.
 PMW-F3 of the highlights of the large pixel
That large areas of pixels, it seems difficult to understand people, in fact, for example to speak, such as we all know the canon of the "magic rabbit" image sensor pixel more than one million two thousand, then a full-frame size , the "species" on more than twenty million pixels, then the size of a pixel can have something much it? Should be very small, small how small we do not need to study, while the PMW-F3 on the image sensor pixel size, is generally 35mm full-frame SLR prototype four times. What does that mean? The case of "magic rabbit" on the image sensor in the top four pixels PMW-F3, a pixel area. Way, because a single pixel area because of its image sensor sensitivity and dynamic range larger than necessary, which, under special conditions such as low-light shooting is very useful.
 PMW-F3 of the highlights of the recording format is not complicated
For most of these "special professional equipment," the record formats are rather special, common good. The PMW-F3 video compression using MPEG-2 Long GOP formats, and prior to the XDCAM EX series of common, and even support the DVCAM format (DV-AVI type2) of SD storage. This allows PMW-F3's versatility is very good.

Sony High Definition HDR-TD10E Aspect 3D

Japan's earthquake and tsunami, did not affect Sony's release of new products. Yesterday (March 29), Sony Corporation has announced a new model HDR-TD10E 3D high-definition high-end consumer digital cameras, we look at what this model Aspect.
 The major highlights of the hardware
First, as a 3D camera, dual lens is "necessary." HDR-TD10E "one eye", using Sony's "G Lens", optical zoom of 10 times; followed by dual lens dual Exmor R cmos image sensor, an area of ​​1 / 4 inches; re-built a 64G flash memory, the capacity of the built-in flash memory is still relatively affordable, everyday use can basically do not flash memory card expansion will be able to use the; In addition, HDR-TD10E using dual BIONZ image processor, in fact, the so-called 3D before we in the relevant article talked about, basically is a combination of two cameras, so using dual video processor is no exception; Finally, there is a surprise is the HDR-TD10E LCD screen, 3.5-inch area, to reach 1.229 million pixels, it is very tough, may be to achieve the 3D effect on the LCD playback because of it.
 Technical performance Aspect
In the hardware configuration on the basis of, HDR-TD10E the image sensor chip is 4.2 million pixels (total pixels), because it is 3D, two image sensor Total pixels add up to 420 multiplied by 2, because the still pictures can the two image sensor pixels together, so the HDR-TD10E shooting still pictures at a maximum 7.1 million pixels. In the optical zoom lens, in the normal 2D mode and 3D performance is not the same model, 3D time is 10 times, 2D time is 12 times. 16:9 format in the 2D wide-angle lens when the end is 29.8mm, telephoto when 357.6mm. Other areas such as "Smile Shutter", "face detection" capabilities, we can not more wordy, and you look through these links you can.
 64G on the built-in flash memory recording time
 3D mode, using 28M (3D) can record about 315 minutes; the highest rate in the AVCHD 28M 2D mode can record about 315 minutes, 24M about 375 minutes, 17M about 505 minutes, 9M about 895 minutes, and then small rate on no need to use, because a high-definition video camera because the rate is too small to record the video resolution up to basic standards of high definition it is the machine of some spoil. Other aspects, HDR-TD10E by Sony's "Memory Stick" or "SD Card" to protect developing memory to achieve longer recording requirements.

Problem of encrypted digital camera battery

The so-called digital camera batteries, "encryption" refers to the camera can only use the original machine comes standard with a battery or original battery, battery or other alternative can not be used without success, "decrypt" the battery. This "encryption" in principle something like this: between the camera and battery in the "battery power to the camera" under the premise of the relationship, but also between the camera and there is a "communication" or "the code" relationship, if two between the "password mismatch", digital camera control system will issue instructions to turn off the power to stop working.
The main reason to use encryption technology batteries, manufacturers have adopted the one hand, the monopoly of accessories, both to make money on the sale of camera host, but also major parts in the battery to make money on this; the other hand, the use of poor quality replacement battery to cause failure of the camera more, the use of encryption with the battery, some battery manufacturers can not produce alternative production of such batteries, users can only buy original battery, can effectively prevent some poor quality replacement batteries for the camera damage .

 Sony Camera Battery encrypted first
Ten years ago, specifically remember which year, I purchased a Sony D8 camera format, the standard battery can only take less than two hours. Would like to purchase a block of the original battery, but the high price of the original battery, the camera can reach almost one-fifth of the price to one-tenth. Want to buy domestically produced alternative to it, and because the battery using the "encryption" technology, once the domestic parts manufacturers can not produce alternative products. Later, after a period of time, finally made alternatives out there, and after the manufacturers does not improve, the basic crack Sony camera battery encryption, battery prices drop nearly a thousand dollars from a few hundred or even less than two hundred dollars.

 Panasonic is also the first time in nearly a decade to encrypt the battery
Panasonic Battery originally thought encryption was "kind", has not used the battery in its encryption products, but in Sony's cameras about a decade after the battery is encrypted, Panasonic digital camera batteries have started to be encrypted. Last year I bought a Panasonic HDC-SD3 small definition DV, the battery capacity of 1320mAh, continuous shooting time only an hour more, the battery will do the encryption, can not use other non-original products, and an external power supply voltage from the previous standard 7.2 volts to 9.3 volts. Panasonic digital camera battery for about two years the use of encryption, and so far the country does not completely break the battery come out, see Matsushita encryption technology more advanced.

 Corresponding to the encryption method of the battery a few simple
Battery technology, no matter how good the encryption, it is estimated there will be factory break sooner or later. In the absence of production of inexpensive high-quality replacement batteries, we have several ways to deal with:
First, you can buy original battery, but the price is very expensive, such as the Panasonic HDC-SD9 Taobao price is only 3700 yuan, while the one and the same standard battery capacity of the original VBG130 battery, Panasonic agents offer as high as 700 yuan, is about one-fifth the price of the camera.

Second, the use of alternative products. Real alternative to completely break out of battery though relatively late, but not completely break the product there, such as a domestic manufacturer VBG130 not exactly break out the product, after experiments in some models of cameras on the normal use, but no battery indicator function.

Third, their transformation alternatives. For example, I use the Panasonic HDC-SD3 Camcorder, by an external 9 volt power supply, can not properly use the original battery can, of course, normal users do not use this method to prevent malfunction caused by improper use.

Panasonic released in the fall of 2011 the new 3D HD Qiangxian Kan

Panasonic announced on April 11 a new 3D high-definition digital broadcast camera AG-3DP1, is expected to be available in the fall of 2011. We look at this new high-definition 3D What are some advanced features of it.
 Panasonic's new AG-3DP1
Panasonic AG-3DP1 because it is a 3D camera, so the other home or professional class 3D camera as a "pair of" eyes, which is part of its dual-lens design of the lens, so it seems all of the 3D origin models have a feature that is similar to the structure of animal or human eye, as there are two, namely, two lenses look more vivid on the appearance of some, a bit like a "big bug." From the picture, AG-3DP1 body and past P2 Panasonic professional models no big difference, but the head is not the same, especially the "eyes" always felt a bit like a cartoon in the "WALL." AG-3DP1 use of two 2.2 million pixel 1 / 3 inch 3MOS image sensor, recording format for the MPEG-4 AVC/H.264 format, and is 10bit 4:2:2 picture quality, really strong.
 Panasonic AG-3DP1 other aspects of the
Panasonic AG-3DP1 lens dual lens optical zoom 17 times, with a ND filter divided 1 / 4, 1 / 16 and 1 / 64 stalls, record high-definition format as well as 720 1080 60i/50i/30P/25P/24P 60P/50P/30P/25P/24P, LCD screen is 3.2 inches with approximately 921,000 pixels 16:9 screen, the other interfaces such as SDI and HDMI also have to use the contents of P2 card recording film.
 AG-3DP1 going to be offering this fall, it should be said in the professional 3D high-definition video camera, the Panasonic still go more forward, including our previously introduced the Panasonic HD TM750 Civil 3D machine, etc., can be considered relatively born relatively early, and follow-up of Panasonic AG-3DA1MC can be considered relatively early to seize the market. But compared to the previous AG-3DA1MC for this section of AG-3DP1 powerful than the previous model to be more than a grade of product.
Camera manufacturers continue to introduce new products, from SD to HD, from HD to 3D, both civilian products or professional products to market very quickly. Most people do not Fun HD, 3D appeared in front of us, scientific and technological progress at the same time, pocket money always seems not enough ... ...

Panasonic AG-HMC83 HMC73 stronger than where?

Previously, we had a story about Panasonic Panasonic AG-HMC73's article about "Panasonic AG-HMC73 shoulder-high definition professional camcorder introduction", when approaching the end of last year, Panasonic has introduced a new model AG-HMC83. Then the difference between 83 and 73 in last place? Our approximate analysis.
 73 and 83 is basically a twin
Panasonic AG-HMC83 In fact, from the hardware parameters of the point of view, and before the birth of Panasonic AG-HMC73 no big difference, big change is the appearance is somewhat different, and later recording format to "regress" to the SD signal can be recorded, and other The basic nothing to say. Why the old model is a pure high-definition recording format, the new model again and then gave the old standard-definition format, "up" on it? This is progress or regress it? Let's analyze it and see.
 To the underestimation of the popularity of high-definition video
We Panasonic AG-HMC83 than the previous model but with the old SD record function point of view, explain the early popularity of products in high-definition video and application underestimated. To this end, the early "pure HD recording" is not compatible with standard definition models because the record the reasons, though after the listing reflects the strong, but because for some time that the AVCHD format HD video post-editing the outstanding issues, restricted the type of promotion and sales. The problems reflected by the market, so Panasonic felt before on the HD market estimates and judgments is unwise, because the popularity of high definition is not so simple, especially in this model is mainly for wedding market in mainland China, although This two-year wedding market growing fast, high-definition video demands are growing, but the Panasonic AG-HMC73 is a form of low-end models, the high-end services into it, it's just bigger in size point, less performance decent; into the low-end services to it, and because only shoot HD can not record SD, plus post-production and other reasons, do so in the wedding service "professional" camera makers can not be interested.
 Panasonic AG-HMC83 SD function is to adapt to market
As we said above, in the case, adjust the previous Panasonic "estimate" inadequate case, and out again on a model with the original record of the SD model Panasonic AG-HMC83. As a result, this AG-HMC83 both the high and standard definition recording format, for some, the low-end wedding video practitioners have a "top to bottom can eat" option. Although the overall original machine is still the basic configuration, but the record machine compatibility extends to solve many practical problems. Ye Hao technological progress, not a problem worth mentioning is backward, the problem is to determine the market a little earlier radical. As the saying goes: changed is a good comrade. The AG-HMC83 can record high-definition changed the "wrong", as long as the price allows you to accept, should be able to have a market.

Opened, "Paul Xia Puxiu HD9000 high-definition DV" the tiger

Recently saw an Taobao called "Paul Xiapu Xiu" (Polo sharpshots) HD9000 digital camera, also known as "treasure up" the price is only 900 yuan. There are other models such as the HD7000, the price of 700 yuan, sales are many. From the image point of view, these two models are "mighty", in particular, a relatively long lens makes a deep impression, for, on this low-cost high-definition digital video camera studied a bit, is the result.
 Seems to be little-known foreign brands
Start with "Paul Xiapu Xiu" to see the words, it seems that Japan's "Sharp" related to search for a long time in fact does not matter. From the camera body does not see Chinese characters, but in the introduction Taobao business point of view, the "treasure up" (PROTAX) to the issue of "network distribution power of attorney", "authorization" is the name of the issuer is a "treasure of the camera is limited company. " Finally a level to find this digital camera official website, figured it out is a Taiwan-funded factories in Xiamen, although not at the official website to find HD9000 this model, but the HD7000 is there may be a new product manufacturers forget his official website made it ... ... it may be Taobao businesses respond faster than the manufacturers do not know how ... ... then there come up with a "Paul Xiapu Xiu," the name.
 HD9000 (HD7000) of the basic functions
Because it did not find the official website HD9000, the HD7000 is only a fact of Taobao, said the HD7000 and HD9000 also no difference in performance.
The first is the HD7000 high-definition video capabilities, you can shoot 720P HD video up;
The second is the "dual power design", that is, you can use random rechargeable battery, you can also use two AA batteries, this design one can explain more "convenient", but also learn to see more "amateur", because although can not say that all cameras use lithium batteries, but at least I did not see the usefulness in recent years, ordinary AA batteries, of course, the design for the rural market is still more desirable, do not worry about some of the manufacturers of the DV Battery encryption issues;
The third is a double-swivel design. In fact, the LCD screen that can be opened from the bottom up, it can turn around and then rotate.
 Other major hardware configuration
 Pixel CMOS image sensor of 500 million (no area description), can be interpolated to 16 million (in fact, no use); video can record HD (720P) or VGA or QVGA up to 30 frames; built-in memory 17M; supports external SD memory card up to 8G; LCD screen of 2.5 inches; optical part is fixed focus lens, 8x digital zoom (the camera is basically a computer grade); telephoto lens (external) 60 times, 0.5 times as wide-angle lens; the HDMI output ; in webcam function, the other is no need to speak.
 Basic Comments
First, because this can record high-definition 720P DV video, so it "crowd in" the ranks of high-definition video camera, although it is far-fetched, and very true HD to DV "injured", but can not be said to be without just cause. Second, from the hardware configuration point of view, is indeed a more "cottage", such as "fixed focus lens," wide-angle and telephoto only by hand to "change the lens," of course, the lens is not a random external standard attachment, really is the "basic zoom by walking". Third, this "high-definition DV" (really do not want the word to use DV to HD on this machine) the advantages are obvious: First, a large head, a look is "mighty," out to shoot something is "bluffing "Most people do not see short-lived fad that is what" advanced equipment ", if the placement of a telephoto lens, ha ha ... ...; the second is cheap, HD7000 also seven hundred yuan.
Other areas: In fact, if spent on Taobao 700-1000 to buy a HD7000 or HD9000, then this really is better to use the money buy one such as BenQ W1240 (Jingdong price is 699 dollars) or Panasonic F3 (Tokyo price of 859 yuan ) digital camera, are "being eight by" things, 12 million pixels, 1/2.33 inch image sensor, can shoot 720P HD video. If you focus on camera features, you can also consider less than $ 1,000 for general DV1 and other products, of course, if the "face as the most important", you can consider this "fool head fool the brain," the guy.

Monster high-definition camera of the Sony NEX-FS100

Although the Sony because of Japan's earthquake affected by certain production, but this does not affect Sony's introduction of new products. Recently, Sony has introduced a so we say other than "monster" professional HD cameras NEX-FS100. We look at the NEX-FS100 in the end blame somewhere.
 Similar to the general assembly of building blocks
 NEX-FS100 seems to be no fixed "look," sometimes can be a "box" can also "dress up" into "guns" ... ... NEX-FS100's "body" and the lens and other elements can be separated combination of disassembly, it is a camera right, long like a camera, and using the camera's lens, you can also use a variety of camera lens adapter ring. Observed by NEX-FS100, it seems there is always the "camera" shadow, vaguely feeling a bit out of this product with the Canon by the "magic rabbit" fight about the level of meaning. For this topic, we will be dedicated to writing articles, please everyone's attention, now let's look at the NEX-FS100.
 Sony will position and professional products
From the search for the name of this model point of view, the "NEX" that the NEX-FS100 product positioning. From NEX-FS100 hardware level to see, it seems more like a digital camera structure. Because NEX-FS100 camera lens using a lens, no camera that can "power zoom" and other features; in image sensors, NEX-FS100 use 23.6x13.3mm called Super35 standard large area image sensor , record high definition AVCHD format, the maximum bit rate of 28M, and supports 60P \ 60i and 30,24 P or PAL system 50p/50i/25p variety of frame rates, so it seems, this model 60P and 50P record format, or have certain advantages, but the usefulness of this format is not very strong.
 NEX-FS100 features
We discussed above, NEX-FS100 construction of relatively more inclined to "digital camera", so, NEX-FS100 in the use of the original should also be more compatible with people using the camera, at least in the camera's operation is the case, this models must be true professionals choice, the average home user and used to "automatic" shooting people, best use is relatively easier to operate a "pure camera" better. NEX-FS100 Although located in the professional field, but its use of storage media supports the use of SDXC card, and not using the Sony EX series SXS cards. NEX-FS100 price positioning is relatively high, about 5 million yuan or more, the price should be said to be relatively high, do not know how many professional users "buy."

Infrared cameras can really see the human perspective of the clothes it?

The first two articles of our infrared camera principle is analyzed, the second article also shows that the infrared camera could be modified by a certain "conditional perspective", it is not we walking down the road people will be able to use infrared camera "perspective "out? Although this matter extremely small, but do not say absolutely that is not, but you can dress so to avoid such things.
Perspective is not terrible so-called infrared
Infrared perspective is not as legend so terrible, in fact, even if it was modified with infrared cameras, and can not "see through" all the clothes, the perspective is the use of infrared wavelengths of infrared light than visible light and long, have a choice of some of wearing a dark (eg black) non-cotton clothing like tights have a certain "perspective" effect, while the class of cotton and non-tight clothes is basically a "powerless" to. So, for most people, nothing to fear infrared perspective.
 From the dress to prevent "see through" the tricks
To actually make infrared camera perspective are mainly female name, usually in addition to the relatively thin summer wear or more "exposed", the people "perspective" of the possibility of larger, then there are some special occasions such as the swimming pool or gym etc.; if it is in spring or winter, because we wore the thick, do not consider this issue. Note that female compatriots in the summer, be careful not to wear tight clothes and translucent dark clothes, particularly non-cotton clothes. In some special occasion to pay attention to some, such as public swimming places. Olympics "Infrared Gate" Guo Jingjing perspective swimsuit event tells us that it is quite easy to wear swimsuits people "perspective", which is to pay special attention.
 From the photographer's camera or camera perspective to prevent
If you see someone holding a camera or a camera in the shooting, but the front of the camera DV or DC is not a normal transparent UV filter or lens, but a dark filter (IR Lens), then this person should be suspected is not modified with "infrared perspective" camera, in which case the best way is far from the point of this man, of course, if you wear more, do not ignore him, or even give him a supercilious expressing contempt ... ... if it is summer and wear relatively low, it is best to stay away from this person as soon as possible, in general, the perspective taken by the infrared distance it is unclear what the screen shot.

In addition, this special film by conversion to the "perspective" of the very few, most cases will not be met, so did not need to be too nervous, do not let this small interfering with normal work and life.

HD DV uses SDHC cards 2 Notes

With high-definition digital camera memory card normal, proper use of SDHC cards should pay attention, and if used improperly, to take damage or loss of important information will be no end of trouble. Now tell us using the SDHC card or other memory card should be noted, of course, the considerations mentioned in this article also applies to other memory cards DV.
 SDHC card should pay attention to the problem
The use of the memory card to take your place, please pay attention, do not let the card by external damage, such as not to bend or accidentally fell to the ground, etc.; in the plug, take the card, be careful not to let the hands come into contact with metal contacts on the card point; particularly careful not to cards in the sun and moisture exposure, etc. Not use a memory card, put card into the card's protective case, not random fling. SDHC card with card reader to upload data to the computer, try not appropriated directly from the USB port or SDHC card reader, it should first stop on the card in the computer-related (card reader) device, then dial the next time card, or memory card.
 Capture and storage using the SDHC card should pay attention to the problem
Although, the use of SDHC cards and traditional use DV tape recording is worry some more, but also pay attention to some problems. Shooting, continuous shooting tens of seconds or minutes usually is no problem, if the film requires continuous shooting for more than several minutes, pay attention to two issues:
First, pay attention to their long-shot DV fever, if the ambient temperature is too high, continuous shooting, high temperature may be due to the machine, DV will automatically stop recording until the machine can be started again after the temperature decreases;
Second, because the SDHC card is with FAT32 file format, so when the time is very long continuous shooting, SDHC card in a single file larger than 4G record, some may automatically stop shooting DV, although once again took over the capture key can be re- start recording, but may lose important content to be shot.
This problem is a lot of DV's instructions did not mention the use that may be encountered. Professional-grade DV when shooting long a file will automatically rebuild the other continuous record, some of the home does not automatically produce a high-definition DV file, choosing instead to stop recording. Therefore, in the long shot, be sure to regularly check the working status of DV, do not rack up the machine regardless of when the DV of about 4G SDHC card to stop recording to the record do not know, lost the need to take some important content.
In addition, because high-definition DV records video file is relatively large, so use SDHC cards, a relatively large number of capacity is another important aspect is to choose the faster, such as Class 4 or Class 6 SDHC card standard to ensure that the card read, write speed and high-definition DV to match

HD also points "true HD" and "fake HD" it?

A few days before the intention to see the official website of JVC, the camera found on its website products online like "true high-definition hard drive camcorder", "true high-definition flash memory camcorder," "standard definition hard drive camcorder" and "SD flash camera," Machine classification. A "true HD" makes a bit puzzled, what is "true HD"? There are really fake, it shows that because of "fake HD" will have a so-called "true HD." To this end, we as a topic to chat with everyone "true HD."
 What is "true HD" mean?
In fact, you want to know as "HD" such knowledge, it is easy to find on the network, in Baidu, a find a bigger. If you find a "true HD", then, can find out, just makes you look a little confused, because the so-called "true HD", it seems that HD 1080P or 1080i, but we are in the "HD" also see 1080P or 1080i, this is not strange, in the end "true HD" is what the open concept? We first answer said about it: the so-called "true HD" for high-definition camcorders is the recording format can be 1920 × 1080.
"True" cause of HD
 Say that high-definition, we can not talk about TV standards, because high-definition video camera is basically a "high-definition TV" service, or take back high-definition video on what equipment to watch it? HDTV refers to support for 1080i, 720P and 1080P TV standards. Basically all the big-screen LCD televisions, are "support" 1080i and 720P or 1080P; commonly known as "Full HD" (Full HD) is a TV that supports 1080P output. Why the "support" with a quote? Because many TV manufacturers are playing word games, what "support" and "compatible" or similar words on the publicity of their products, which made micro-plane and a car's dashboard and sometimes the speed to 160 km scale, but the car itself can not go 160 kilometers per hour, like dashboard "support" indicates the speed of 160 km, and cars can not explain the actual performance can be achieved this standard. That way, support the "true HD" video playback of TV, does not necessarily have the "true HD" video of the actual resolution; This is how it will appear true, false main reason for the high-definition.
 From TV to the physical pixel camera "true HD"
Digital camera CMOS or CCD image sensor "pixel" concept and we just said basically the same as flat-panel TV, flat panel TV's own actual pixels, the actual good TV can reach 1920 × 1080 pixels, which is in front of that. " Full HD "or" True HD "; some of the actual pixels of TV 1366 × 768, but this TV can also be" supported "1920 × 1080 video playback, but because of its physical pixels less than" true HD " number, the screen resolution is only a maximum of 1366 × 768, rather than the "true HD" 1920 × 1080.
JVC says "true HD", in fact, that it's "true HD" video camera can record standard of 1920 × 1080, but we have to understand, to record "true HD" video, can only be understood as we said earlier. " support "is the same," to record "true high-definition camera the image sensor pixels may not have the actual" true HD "standard.

From the "infrared door" to see the infrared shooting DV

Recently, the Olympics, "Infrared Gate" Guo Jingjing recent perspective piece swimsuit the matter is again making waves online. Why is that non-German photographed using infrared film can function "perspective" swimsuit it? Can the parties as an athlete or other methods through the dress, let photographed succeed it? We analyze the sub-articles to the outside shooting DV can not "perspective" people's clothes.
Infrared shooting DV
Around 1999, I purchased a Sony Digital8 format that D8 model DCR-TRV210E camera, the infrared shooting with the machine, the machine has a Nightshot also known as "night shot" or "night vision" switch, the switch is open, you can shoot in very dark environment to a more clear picture, but the picture is not black and white color. Later in 2004, bought a Panasonic DVC-33 Digital DV, the machine also has this "infrared night vision" feature, the "infrared" feature combined with a slow shutter technology, can be pitch-dark night in the shooting. Two days before the one we just made "Canon XF105 and XF100 features seven" article, Canon also introduced the latest release of XF105 and XF100 has "infrared shooting" feature.
 Active principle of infrared camera technology
We first look around the type of infrared camera, infrared camera about two, one is "active infrared camera technology", the other is "passive about outside the camera technology." We mentioned above, several models are "active infrared shooting", that is, active infrared camera technology is the use of special "infrared light" man-made produce infrared radiation, with infrared cameras record video feature watch these people irradiated by infrared light invisible objects. This infrared radiation of infrared light, the human eye can not see, such as we often use the TV remote, press the button, by remote control infrared light to send the TV remote control commands, but we do not will be issued from the remote control to see the light, because the human eye can not see infrared light, so only "infrared" and "Ultraviolet," saying that we humans can only see "red" and "Purple "within the light, but the camera's CCD image sensor can capture infrared light, CCD not only can" see "the light we can see, but also" see "we do not see the light.
 DV principle of infrared
In fact, the above said, we basically understand how it was a child. With infrared shooting of DV, or other location at the bottom of the lens to protect the red hood, equipped with a set of infrared night vision devices (two or more infrared light-emitting unit), can be opened without any light shooting conditions to obtain a clear black and white images. Built-in infrared night vision devices for the effective range of about 3-5 meters, while the optional high-power infrared light photography the maximum effective range of up to 30 meters, such as the above mentioned Panasonic DVC33 on this accessory, you can burst News, shooting wildlife and public security and other special industry provides a professional image acquisition tool for all-weather activities.

Enlighten me on waterproof HD camcorder ATC9K

We've seen a lot of digital cameras in recent years the rapid penetration of high-definition camcorder, but completely waterproof HD cameras are rare, today to introduce a high definition waterproof camera, this camera that it can be considered from the " the door, "but for the camera for the family, but also a little-known brands.
 Little-known camera brand
To say that we are introducing today's high-definition waterproof camera, do not think that is what Japanese "Sony", "Panasonic" or "Canon", etc., do not think that is more familiar Japanese brands, "Casio", because the first time I This waterproof watch high-definition DV, the former two when they saw that the "Casio", look after the third eye to see it to understand the "Oregon Scientific" (oregon scientific). Began to think what it might be deliberately played a cottage products and the "Casio" similar names, in order to write this article, I still wants to understand the brand's bottom line because as a check came to understand that this "Oregon Scientific" Although we can not say not a big brand, but by no means knockoff, but "Oregon Scientific" not to engage in major products like digital cameras, and now engaged in this "water-proof high-definition video camera" seems to be produced with this brand compared to the mainstream a little bit "proper job" . Gossip or less, under a cut to the chase.
 ATC9K basic technical standards and prices
This ATC9K waterproof HD camcorder's hardware configuration, it's really hard to say that, because the Internet are finding out from the official. Can learn the ATC9K waterproof HD Digital Camcorder with 20 meters water resistant and 1.2 m anti-collision function, equipped with remote control, able to shoot HD 1080P, the maximum memory support up to 32GB Micro SD memory card, body with 1.5-inch color LCD screen. Official website can only provide these data, in Jingdong publicity page, you can understand this definition waterproof camera 5 million pixels. Standard accessories supplied from ATC9K, such as HDMI cable, USB cable, it can determine the machine should have HDMI and USB interface, other parameters such as lens and image sensor data can not be more important to know.
Prices, the official website of the "suggested retail price" to $ 36.8 million, Jingdong offer for 2948 yuan.
 Proposed purchase price and
From a functional point of view, this ATC9K water is mainly used in the shooting, you can dive photography, but this demand of users or small; grade from the hardware point of view, ATC9K estimated that up to and the general configuration of the low-end consumer digital camera considerable; in appearance, ATC9K really not very nice, should be included in "DV strange weapons" s; the price point, ATC9K not too cheap, its features and price ratio, price is not strong. Comprehensive view, this ATC9K attachment if used as a device can, if used as a dedicated camera, the choice is basically no reason; but if there is a special purpose, such as a water demanding or shooting environment, is required, but also a different matter.

DV of the proper use of weather-resistant microphone

We use DV when shooting outdoors, such as strong winds blowing outside, the beach or the mountains to shoot, the wind will be blown DV microphone, although the DV are taken into account in the design of this issue, there will be some weather-resistant, But the strong wind or strong wind to the DV when the microphone will record the voice in a very strong "whirring" sound, the greater the wind "whistling" sound, the stronger, and even the noise will overwhelm us like To record the sound.

To solve this problem, a lot of DV, there will be "weather-resistant" (WIND CUT), in the early years of video production, and mostly in the vicinity of a microphone WIND CUT switch, in recent years, the production of a relatively new camera because the volume other reasons, generally do not switch the camera on the set, but in DV settings menu there is an option, as described with the figure, as set by us according to shooting conditions to open or close the wind (WIND CUT) function. When this feature is turned on, the camera will use about two microphones to pick up low-frequency subtraction of the wind, which to some extent, reduce wind interference, you can basically guarantee that we will record the sound of the clarity.

Wind features, while a certain purpose, but also pay attention when using this feature it would be used as a low-frequency signal attenuation, which affects the sound recorded in low-frequency signals, so if there is no wind in the environment the camera, this anti- Wind function should be closed. Many of my friends set their own DV, this feature did not understand or do not fully understand, that this feature is turned off is better than some, and some even set up the DV unit in all of the settings menu item in the "OFF" changed to "ON" This understanding is wrong, we need to correctly understand the DV feature set items, the open function to open, or open, when needed, and shooting conditions necessary to open, should not be open to close, regardless of indiscriminate The indiscriminate shooting is likely to affect the normal effect, to create an artificial and unnecessary losses.

DV infrared shooting capabilities "perspective" it?

By the last article, we learned about outside shooting DV is how it is, then the DV with infrared shooting through "infrared film" perspective of people's clothes? We next analyzed the possibility.
 With infrared capabilities of the DV in principle it can take the "perspective"
We mentioned in the previous article the infrared camera DV function is "active infrared camera technology", that the machine itself or through an external infrared emission lamp is infrared light, infrared light shines on an object or person being photographed body, the camera can shoot the next image. That if there is no infrared light irradiation, with infrared film can not capture DV function to the appropriate screen. So, with infrared shooting capabilities in the design of the DV, is not what "perspective" of the function of people's clothes.
 Why do not all have infrared DV shooting function?
You may wonder, since the DV can be infrared photography, it is not all DV can have infrared light in the conditions of capture images? In fact, it can be said of all the hardware is all DV have this condition, but there is no factory in the manufacture of "do not have the" IR DV shooting function or to retain this function to develop. We said, DV image sensor itself, it can "see" the money in addition to human visible outside the infrared, but the DV in the manufacture, in order to prevent the infrared and ultraviolet radiation on the human eye visible range of light interference in the image sensor surface installation of a filter, so that the lens resulting image to the CCD or CMOS image sensor, because the human eye to filter out light other than visible light, DV only records the visible light range of the human eye.
 DV shooting capabilities with infrared and other DV are different?
In fact, the DV with infrared shooting just do not have the infrared than the DV capture function much the same thing, or not more things, but differ only on the structure, ie, no shooting of the DV of infrared image sensor the infrared filter is fixed, mostly attached to the CCD or CMOS on, while the DV camera features infrared IR filter is an independent and can be moved, and this, and two people have sunglasses, a are fixed in the eye during the day and night wear, while another person is not "see" infrared light has been wearing when the need to "see" the infrared when the temporary come off.
 DV shooting with infrared capabilities perspective can it?
The transformation is a simple conditional perspective, of course, this feature used in the videotaping or illegal purposes is not. The specific method is in front of the camera with night vision capabilities of the installation of an infrared lens through, only to infrared in one called "Near infrared" light through, blocking visible light and ultraviolet light, a light in the daytime or conditions, off (remove) CCD infrared filter before (that is, turn on the DV capture function or said infrared night vision function), so that you can only see infrared light reflected into the image, which can "conditional perspective "clothes to see the human body.

DV digital zoom and optical zoom of the difference

There will be a lot of consumer DV "Optical Zoom" How many times, and "digital zoom" feature dozens or even hundreds of times, and even a lot of business with "digital zoom several times to convince customers to buy a poor model performance We analyze the digital or DV digital zoom and optical zoom called the difference.
 The basic principle of optical zoom
 Optical zoom is the zoom DV camera itself, the zoom will not be too general, most of the 8 times to 12 times, and some models up to 30 times or more points. In general, the more professional models, the high price or a good model will not have much optical zoom capability, not in optical zoom lens can not do great, but no matter what lens, zoom range is too large, but its performance is poor, so in order to ensure that the lens image quality, optical zoom lens range generally will not do much, DV's more than 20 times optical zoom lens is not much.
 Advantages of optical zoom
We use DV, if by pressing the zoom button to see from the front of the lens zoom lens moves back and forth to change the focus groups, and will see in the image on the LCD screen size changes occur, this process is the zoom. This zoom lens is entirely part of the optical lens to complete, although in the course of the zoom lens aperture can vary, but the images obtained by the optical zoom is basically non-destructive, and will not reduce image clarity. But because the lens structure, size and cost of production constraints, not a great zoom range.
 The basic principle of the digital zoom
On the "Zoom" two real, the optical or digital zoom to get the basic effect is the same, the popular talk is to screen "zoom" or "narrowing" process. But digital zoom is done by the digital zoom circuit, which works into the digital zoom, the lens portion of the lens fixed and, as it has been in the "telephoto" status, or that in a fixed focal length state, from inside the machine The digital circuit according to the selected zoom image zoom, this "deal" will give up some selective data or images to form a digital zoom, zoom factor the greater the drop, the more data, the resulting is likely to be very clear picture. Therefore, the number of (digital) zoom is a lossy zoom, it will generate code image mosaic phenomenon, significantly reducing image clarity, and the zoom factor greater clarity to reduce more.
Therefore, the digital zoom can not say no avail, but no practical use, therefore, can be ignored when buying digital DV (digital) zoom function.

Downgraded to scrap from the luxury of SVHS tape

A few days ago to the city of Qingdao, electronic information, go to a multi-camera operation and related products business to ask something, found the house had accumulated some goods, closer look, the original is a lot of VHS tapes and SVHS tape, there are many brands, Panasonic , JVC, Sony, Maxell, etc. are. This is to ask them to ship it? Replied: "When the waste is disposed of, when the plastic also sell unwanted, sad ah! ..." When I saw these "luxury" If the waste does not become too bad, give them out of a idea: "Working in rural areas can not I?", "No, ah, asked, and also unwanted, all with a DV tape, and brother, you take the boxes back with it (a folded plate) ..." and my manager said. "I, I, I do not have this ah." Eventually get back to two, in order to write this article take a picture with. Things went through four or five days, "luxury" is still there piled ... ...
 The past 20 years changes in camera recording media
Just prior to writing this section headings, the first to write a "nearly 20 years to change the camera to use the tape," but found that such a book written, because the tape is gradually withdrawn from the market, replaced by flash memory cards and hard drives, so into the current subtitle. Although the camera has entered the HD era, the card is being replaced by tape, but the vast majority of home or professional class cameras and video products, or standard definition DV format, or even earlier-called "sophomore a" lot of people have the VHS tape not forgotten, especially in the era of top-level professional format VHS SVHS series. Today we look at the era of luxury SVHS VHS tape.
 VHS and SVHS tapes of different
Probably from 1990 to 2000, we can see the "professional" cameras are basically the VHS series, the higher is the SVHS, such as when the classic models such as Panasonic M9000. Although the M9000 can record SVHS format, but it is also backward compatible with ordinary VHS. SVHS and VHS tapes in fact the size is the same, but different tape coating, which SVHS also called "metal band", can record 400 lines of horizontal resolution video; VHS tape is common, can record 230 lines resolution degree video.
 SVHS is the era of luxury
Prevalent in the VHS era, the vast majority of people use VHS tapes, even if you can record using the M9000 or M8000 SVHS format camera personal or professional use, rarely using SVHS tape, SVHS at the time because it is too expensive , a 60-minute SVHS price probably around $ 200, while an ordinary VHS tape format at 20 yuan, so when the image quality is not the pursuit of the case, using the SVHS format tape very few people, only some Large enterprises use "expensive" SVHS format tape, SVHS tape format can be said at that time "luxury."
 SVHS be true that only waste it?
Look at their cameras and camera played, how many have become waste it? Look at the host computer and monitor used, which is also upgrading a lot of it? TV and many other household appliances as well. Therefore, SVHS become waste is not a strange child.

Digital cameras use lithium batteries in the correct

To the digital camera battery is a bit of learning, do not understand the basics of charging, the battery charge is not only bad, when shooting a short time, will shorten battery life.

 1, DV camera battery charging time
Battery charging time can not be generalized, because different battery capacity, charge current is different, etc., will affect the charging time. Digital camera comes with a charger, the charger has charging status indicator, such as the just put the battery charging, the indicator lights, and other battery to a certain extent, the light will change color or turn off. Then charge the battery basically good, but if we really want the battery is fully charged, it will take longer because as. Large-capacity battery charging time is long, my experience is that if there are two batteries to charge, first charge capacity of a small, high-capacity rechargeable battery, charging and high-capacity batteries can go to sleep the next day will charge a good morning.

 2, DV cameras can be used with rechargeable battery
Early cameras generally use nickel batteries, long charging time the battery if the battery in the crystallization of the liquid will prevent the charger a full charge. Therefore, the discharge must be fully charged or on a regular basis. Now digital cameras use lithium batteries, we can easily charge the battery at any time, we did not like the nickel batteries, as trouble, not necessary time to fully boot and then can not use lithium batteries.

 3, DV camera battery life
On the life of lithium problem, say many, such as lithium can only charge 300 to 500, then you need replacement. Correct to say that the life of lithium and the number of charge cycles completed, and number of charge cycles is not directly related. Simple to understand, "a charge cycle" refers to the full battery of all power used by the air, then air charge to the full process. Therefore, the charge number of times, and the actual battery charge cycle is not reciprocal. For example, a lithium battery's charge cycle can be used for video camera use 10 hours (note that a charge cycle, not one charge), three hours after actual use, the battery is full of a battery; use five hours later, once again filled with a battery, two electric charge at this time though, but a charge cycle is 10 hours of battery charging time to add up to only two 8 hours, therefore, the third piece of the battery is fully charged after using two hours before completed its charge cycle.
As you drink a glass of beer specified, you drink a cup of follow-up one-third fill up, and you can not say that drinking a cup, a cup of beer, regardless of whether you continue to add, once you drink a third cup, then drink three times to complete the assigned task is "a cycle." So the correct argument lithium battery life is 300-500 charge cycles.

 4, DV camera battery charging times
In fact, with the above explanation, say the total number of charge cycles a battery does not make sense, however, each completed a battery charge cycle, the total capacity will be reduced that period to reduce the magnitude of the size depends on how the quality of the battery. Generally high quality battery charge cycle many times, will still retain the original power of 80%, for example, can reach the upper limit of 500 charge cycles, which is still two or three years a lot of lithium as usual reasons; that the poor quality of some lithium battery, the charging cycle may be up to the lower limit, such as 300 or less, so this battery will make people feel a more obvious "less and less resistance to using the." In any case, DV camera to use Lithium batteries eventually need replacement.
If a high-quality lithium battery charging cycle is 500 times, and we used half of the charge each time, it can charge the total of 1000 times. Therefore, the lithium battery life and the total charge capacity, and the number of unrelated charge, rechargeable lithium battery is discharged or re-used with the charge for its life-span of less. Therefore, DV cameras use lithium batteries used to facilitate the main, with the use charge without fear of affecting life.

 5, DV cameras use lithium batteries Notes
One is not above 35 ° C above the environment or to use lithium batteries, the battery and do not save on the daily temperature is too high; two at low temperatures such as 4 ° C The following uses a lithium battery, battery time is reduced, and the low temperature environment may charge no power; third is if you do not often use lithium batteries, lithium best month to complete a charge cycle, that is, filling a deep deep release.

Digital cameras do need to install the UV lens

Buy digital video (DV), the need for a UV lens with it? What is the role of UV mirror? Let us know about UV lenses, UV English Utlraviolet (UV) abbreviation. UV microscopy main role is to filter out the ultraviolet light.
 UV mirror originated in the era of traditional film cameras, because the film to light in the ultraviolet-sensitive, ultraviolet photographs have a strong cast of local phenomena, so in front of the camera lens with UV filter out ultraviolet light to correct color cast. UV lens protection and because there is the role of the lens, such as to prevent dust, fingerprints, rain, snow and the pollution of the lens, so the general will on the camera lens with a UV microscope, and mounted on top of perennial not take off, UV lens basic become a necessity.
 Digital cameras use CCD light-sensitive device is not sensitive to UV, so UV lens for digital cameras, the main role is to protect the lens, so as dust, fingerprints or oil such as damage to the lens. Home video camera lens aperture is relatively small, buy a UV lens with a lower price, multi-layer coating diameter of 37 mm or so of UV lens also hundreds of dollars. There are also so-called market poor quality UV lens, in fact, an ordinary glass, the price of ten dollars or so. This lens is not UV coating, use of light will be reflected back into the lens part, and thus have an impact on quality. This, friends who wear glasses should be more able to understand, there are coated glasses and uncoated, coated glasses and good light transmission, basically do not feel the presence of the lens, there is no ordinary lens coating is different, often subject to interference from outside light to see clear, backlighting is particularly serious. If we put a DV to their non-coated "lens" is bound to affect the image quality.
Some friends asked, using the UV lens is not affecting the image quality of digital camera do? In theory, no matter how good the quality of the UV mirror or other lens attached, are more or less will affect the image quality, but good quality UV microscope imaging has little effect, negligible. We choose the UV lens, it is best to choose a professional camera store supplies UV coating on the mirror installed on the DV camera, the general single-layer coating can be, the common brand KENKO (Kenko) and HOYA (Hoya ). As a result, the lens in the lens under the protection of UV safer, dust, UV mirror files will be live, just clean up the UV lens on it.

Buy digital camera battery tips

Random House will use digital cameras with an ordinary battery, this battery time and only last up to two hours, a battery for the camera and then matching is necessary.
 1, the source of digital camera battery
 DV uses two main sources of lithium, a manufacturer of original products is DV, the other is the domestic parts manufacturers to produce alternative products. Battery performance and life from the point of view, the original product is still relatively good, but compared with the alternative product, its price is too high point. Domestic products, especially for digital cameras and digital cameras digital battery manufacturers produce more, product quality was mixed. There are several brands of the good, the quality of basic battery can be comparable to the original battery. Examination is the best brand direction, of course, the price is relatively expensive, and secondly, such as product wins, Sanger, REpower and so on.
 2, non-original battery price and performance DV
Now the price of domestic DV camcorder battery is relatively low, such as the price of the original standard battery in the $ 500-700, then made the same capacity alternative battery only 150-200 yuan can buy into. Although the alternative battery life and performance than the original almost, but the price is still high. DV in the purchase of these non-original batteries, we must be careful not to purchase counterfeit products, such as the aforementioned brands, such as direction, quality wins, etc. These batteries are generally no fake, the more signs the name of the original battery battery, the more fake and shoddy products. If the business claimed that his battery is the original goods, packaging and battery itself is a certain brand of DV and the same logo, but the price and other domestic alternative battery basically the same or even lower, then basically it can be concluded to be true . Use fake battery light does not work properly, such as the use of a power outage, use shorter time, a serious burn DV in the relevant circuit, so that backing is not clear or backing "great" price not to low battery purchase.
 3, to choose a large capacity battery
Optional DV battery, you should try to buy larger capacity. DV standard battery capacity is generally not large, the manufacturers are basically based on power consumption with a DV would be able to shoot two hours of continuous battery. If we buy domestically produced alternative battery, standard battery capacity, and do not choose the same product, at least choose more than twice in wife battery capacity. Such as the standard battery is 1200 mAh, we can buy a 2400 mA or larger then the.
 4, true, simple to distinguish fake DV Battery
We are talking about real, fake batteries, not included its own brand of domestic DV battery, just the name of the original battery for the production of bogus products under the banner. False appearance may be rough DV battery, say "may", because many false things to do than really still beautiful, ordinary users only through their appearance is difficult to judge the authenticity of; Then there try the weight of the battery, false the true capacity of the battery with the same battery of comparison, should be lighter weight, mainly because of the internal use of batteries can not. I have split off fake DV battery, its internal use of the batteries turned out to be four bad cell phone battery with a 3.6V square and then two parallel series of 7.2V, where the internal gap filling foam; the original battery, or brand made general use of alternative battery of high-quality imported or domestically produced single cylinder lithium batteries, so the same size batteries and will not leave the battery in the same weight.