What should I pay attention to when buying DV? Novice questions, hope to answer in detail!

10 big mistake suggestion for purchasing DV for the first time

I believe that digital camera is also the second goal that many friends want to have after owning digital camera. Because the digital video camera is also in the development stage, because it may confuse friends who want to buy it, a DV with at least four or five thousand yuan at a time is not a small consumption for ordinary consumers, because the selection process requires more careful thinking and certain knowledge of purchasing. Often at this time, you will read a lot of relevant information, but in fact, a lot of information will lead to misleading consequences. So, today, I will tell you about the misunderstandings that you may walk into when buying DV, and see if you have walked into these misunderstandings, so as to make up the common sense that you need to buy in time:

Myth 1: I want to buy a digital camera made by a well-known manufacturer, not a DV brand.

For friends who buy DV for the first time, the author should first give correct guidance, because this is the premise of buying DV. You need to determine what brand you want to choose, and then choose from the brands you have already chosen. But for friends who are not familiar with DV but have brand complex, this may be the key determinant. At present, there are not many DV brands, but there are also first-line manufacturers and second-line manufacturers. Sony, Panasonic and Canon can be regarded as first-line brands in DV industry, while Samsung and Sharp can only be regarded as second-line brands. However, this division does not mean that the quality of the second-line brands is poor, and the first-line brands are definitely good. This is chosen according to personal needs. The products made by second-tier manufacturers are cheap and have many choices. If a friend with limited financial ability can consider it from many aspects, don't have the idea of buying a digital camera from a well-known manufacturer and not marrying a non-DV brand.

Myth 2: I want to buy a DV with the same function and pixels as a digital camera.

Many friends say that if DV has the function of DC, and the two are integrated, wouldn't it be easier to buy only one? Although the technology of DV is still relatively mature, the photo quality of DV is still inferior to that of DC. Think about it, if DV has the function and quality like DC, isn't DC bought by no one? Hehe, so if we want to buy DV, we must use the index of DV itself to measure it, and there is no need to compare it with other different products.

Although DV and DC belong to the same digital imaging equipment, there are still many differences in selection. The most obvious thing is that the pixels as hard indicators in digital cameras are not decisive for digital cameras. The playback demand of ordinary TV is about 380 thousand pixels, and the extra pixels are actually used for image stabilizer and repetitive operation. Therefore, mainstream cameras with 800-/kloc-0.0 million pixels on the market can meet the demand. At present, the lowest-end machines on the market are basically 800 thousand pixel models, so don't worry about this problem at all. If you still want to take some good still photos, there are 2-4 million-pixel DVs on the market, so you can choose these, but the prices are basically above 8,000, which is more expensive.

Therefore, friends who want to buy DV should know that DV is to shoot moving pictures, which only pay attention to the effect and do not need too persistent and unimportant factors.

Myth 3: The higher the digital zoom of a digital camera, the better, and you can shoot farther.

Nowadays, digital products like to exaggerate some meaningless functions. The biggest confusion should be high-power digital zoom. Now DV even boasts 700 times digital zoom. In fact, digital zoom is meaningless.

In fact, the scene shot by digital zoom is enlarged, but its definition will decline to a certain extent, so digital zoom is not of great practical significance. The digital zoom of DV is about 44 -700 times, and 40 times is enough in actual use. Because too large digital zoom will seriously damage the image, and sometimes even because the magnification is too high, it is impossible to distinguish the shot picture.

On the contrary, the actual effect should be optical zoom. Optical zoom relies on the structure of optical lens to achieve zoom. The zoom mode is similar to the working principle of a telescope, that is, the scene to be shot is enlarged and reduced by the movement of the camera lens, and the picture effect will not be affected after large zoom. The larger the optical zoom coefficient, the farther the scene is photographed. So when we buy, don't think that high-power digital zoom is cheap, it's just a smoke bomb that DV manufacturers want to confuse people.

Myth 4: If you want to buy a multifunctional DV, you should compare the technical parameters.

DV is constantly upgrading, and the conditions to support upgrading are to continuously add new functions and improve technical parameters. However, we must be clear that the more additional functions, the more expensive the price, and the fewer opportunities for future use. In addition, the more additional functions, the effect of other functions may be sacrificed. I don't think it's worth trying at all, so I choose some functional dv.

At present, many shopping guides and comments like to use parameters to explain the problem, but parameters are only one factor we refer to. If you need to compare one by one, there is no result at all, because small parameter differences are not reflected in the shooting effect. The correct way is to take the basic parameters as the guide and try it in the DV shop in person. Compared with the real thing, it is more referential than studying the parameters at home alone, so if you already have the heart, go to the computer city to try the effect immediately!

Myth 5: The bigger the LCD screen, the better, and it is comfortable to see.

Of course, it is comfortable to see a large LCD screen, but when you think that the 2.5-inch screen is still too small to choose 3.5-inch, have you ever thought that this LCD screen has actually brought you some unnecessary problems? LCD screen has two disadvantages, one is that it increases the cost and is expensive, and the other is that it consumes a lot of power and shortens the use time. Therefore, it is of little significance to pursue the size of LCD.

Myth 6: 3cd digital camera is the best.

CCD is the most important part of digital camera, the main index to measure the imaging quality of digital camera, and also the dividing line for manufacturers to distinguish the grade and price of camera. Generally speaking, the threshold to enter the 3CD is definitely expensive, and the household 3CD is small in size, and the effect is actually similar to that of the DV of ordinary mid-range large CCD. We don't need to fall into the misunderstanding of 3CD.

Myth # 7: If you buy an entry, less than 1000 is enough.

At present, there are many products called DV on the market, such as digital photography, digital cameras, computer cameras, MP3 players and so on. It looks very good, but accurately speaking, those products can only be regarded as digital toys, at best, they are just digital cameras, not DV. This kind of products mostly use CMOS imaging, which is quite different from the CCD used by mainstream DV at present, and the color is monotonous. It is obviously not practical to use this kind of products as cameras.

If you want to buy an introduction to DV, you should buy it formally, and don't take these crooked ways. Now Samsung and Panasonic have some low-end DV products below 3000 yuan, which are very suitable for entry.

Myth # 8: Online shopping and TV shopping are quite cheap. Just mail order directly.

Nowadays, online shopping and TV shopping are very popular. Many people are attracted by the vivid words on TV, but I don't think online shopping and TV shopping are safe. First of all, there are security problems. There are many online scammers. Thousands of dollars is not a small sum. I was cheated accidentally, and I couldn't cry back. Secondly, quality assurance. Electronic products are generally bought after they have been tried without problems. If you send them out at a loss, or if there is something wrong with you, or if there is a collision in the mailing process, I don't know who is responsible for the machine problems, and finally I can only regret it. There are many potential problems, so I won't talk about them here. In a word, I advise you that you'd better try your valuables before buying them. Don't save time.

Myth 9: It's good and cheap to buy in foreign countries and Hong Kong!

Now the mainland and Hong Kong are open to free travel, and even many people like to go abroad and bring back some electronic products, which is what we call parallel imports. Because these products are not taxed, the price is cheaper than domestic licensed products, because many people take the risk of customs investigation to bring them back. But when you brought it back, did you ever think that saving a little money would actually bring many problems?

First of all, the general parallel planes are not simplified Chinese, but Japanese and English, which is definitely an obstacle for friends who are not familiar with the products. Secondly, there is no warranty for problems with the parallel plane. The machine has been used for a while, and it is a problem to send it for repair. For the safety of your machine, please support the purchase of authorized products. The money saved by parallel imports will still be used on machines.

Myth 10: Expensive is the best performance.

Perhaps many people think that it is best to buy expensive ones, and it is always the same theorem. Even if this theorem holds, have you ever thought that you need to buy such an expensive machine? If a 5000 yuan DV can meet your needs, why choose 10000 yuan DV? In fact, the current mid-range DV is very user-friendly, 5000-6000 yuan can satisfy the vast majority of users, and DV is no longer as expensive as before. When purchasing DV, we should proceed from our own reality and see what model we need and what to shoot, instead of blindly following the idea that expensive is the best.

Summary:

The most basic thing is the above 10 score, but having this knowledge when buying can only give you a correct direction. For specific types of purchasing skills, you still need to go to forums and professional websites to enrich your DV knowledge and get ready for buying a satisfactory digital camera.

Parallel imports and licensed goods:

First, observe the peripheral devices.

Whether the peripheral equipment is complete is an important proof to distinguish whether it is parallel. Of course, if profiteers want to detain peripherals privately, it is definitely intolerable to consumers. Usually DV peripherals are quite complete, from the memory card to the button cell on the remote control.

In addition, the instruction manual and warranty card must be printed in Chinese, and should have the model and serial number of the specific machine. There will be a description of the machine in the manual. Pay attention to the standard of the machine here. Dv sold in China is mostly PAL system, and NTSC system is mostly used overseas. The second is to see whether the machine interface, key position and various parameters in the manual are consistent with the real machine on the market.

If they are exactly the same, you can start to further verify the machine.

Second, the overall inspection

The most important thing in this item is to observe whether the fuselage and screws have scratches and warpage. If not, open the LCD screen and carefully observe whether there are any bad spots on the LCD screen. There are too many bad points, even if they are not parallel imports, there must be big problems. After that, it is best to shoot in the best mode to see the effect.

Third, the authenticity of accessories.

Even if there is nothing wrong with the machine, some profiteers will cheat on the accessories. First of all, the first point is that there must be no less accessories, and then carefully observe and try out all accessories, especially batteries, and be sure to pay attention to whether the fonts printed on them and the capacity meet the specifications. If all the above tests pass smoothly, congratulations, you have bought a perfect licensed digital video camera.

B: article b: DC

The key is the dark bright spot and bad spot test of LCD and CCD. The following detailed operations:

1. Turn on the camera, warm up 1-2 min, use this time to enter the menu, turn off the date printing function (the new machine is turned off by default, so it is not new when it is turned on), turn off the noise reduction function (by default), and turn off the image effects (sharpness, contrast, clarity, saturation, etc.). Are turned on normally), turn off the film reversal effect, and automatically white balance. Then cover the lens cover, and the machine without the lens cover firmly covers the camera lens with a flat, dark and thick notebook. If possible, wrap the lens in a black cloth. Image format is the most commonly used jepg fine. Some automatic machines automatically open the shutter to reduce noise when they are slow, and the solution is discussed in the second article.

2. Start the test now. Don't zoom. First, test the bright noise/bad points at the lowest iso. Needless to say, full manual and partial manual, you can manually adjust the iso to the minimum. If there is no manual camera, the following methods will be used. Use the fastest shutter and ordinary shutter (1/250s,1125s, 1/30s,115s to 1s). Automatic machines can't determine the shutter, so they take pictures in night mode instead of the slowest shutter sample (iso is generally the lowest at this time, but some machines will automatically turn on noise reduction); Use night portrait mode (blocking flash) instead of 1s shutter to take proofs; Turn on the flash with automatic gear (P gear) (automatic flash mode, remember to block the flash) and take a sample instead of1/60s; Replace the1125s sample with the landscape mode; Replace the fastest shutter sample (if any) with the motion mode (if not, forget it). Except for night scene mode, the above alternatives will not be turned on. Don't worry.

All the above tests are bright noise/bad points, which reflects that the leakage, short circuit and breakdown of ccd complementary oxide elements will lead to bright noise/bad points. The so-called bright noise/bad point is the point on ccd that is always abnormally overexposed. It is also necessary to test the following dark noise/bad points, which reflect the burning, open circuit, even oil leakage and ash entry of ccd elements. On the contrary, dark noise/bad spots are always insensitive to light on ccd.

3. Open the lens cover or remove the object blocking the lens and start testing the dark noise/bad spots of ccd. Many people don't take this test. I have helped many people test the country and found that many friends have encountered this situation, which sometimes affects the quality of photos, but I regret it after the replacement period, so I have to say it here. Remember: If your machine is not new, the dark noise may be caused by ccd dust/oil leakage. Aim your machine at a piece of pure white paper. White paper has better lighting. Use a small desk lamp to increase lighting. Fluorescent lamps use automatic white balance, incandescent lamps use incandescent lamps (halogen lamps) white balance, and other settings remain unchanged. Fill the picture frame (viewfinder) with white paper and keep a distance of about 20cm to prevent the machine and hands from blocking the light because they are not too close.

For fully manual machines, use manual gear shifting, and the shutter is gradually accelerated from 1s to shoot all-white test films. Remember that the key is that the white paper is overexposed by more than 2 steps (the machine will mistake the white paper for 18% gray scale instead of 0% gray scale! Refer to the manual exposure meter to adjust the aperture and overexpose for more than 2 files (preferably 3 files) to shoot all-white films. Gradually increase the shutter speed until the aperture can not meet the overexposure of more than 2 gears. This process can be realized by shutter priority and exposure compensation. This series of tests estimated that the shutter speed could reach about 1/60s. Of course, someone must want to know how to test the dark noise/bad point at a faster shutter speed, but this is not necessary. Brothers who must try, first, can increase the lighting of white paper, and second, can cooperate with flash (overhead/external connection). Turn on the flash by force. If the output power can be adjusted to the best (for example, fz20), the output power of the flash can be increased by more than 2 steps, and the shutter is used to shoot all-white films first. For the machine that can't control the power of the flash, turn on the flash forcibly and raise the aperture by 2-3 steps. If the default aperture of your machine is already the maximum when using the flash, it will be miserable. Because the shutter in flash photography has lost control of the subject exposure. Under the condition that the flash can be synchronized, the shutter speed that can be achieved by various machines is different, but it can generally reach 1/250s (consumer dc is generally a vertical focal plane shutter). Faster shutter can only use advanced flash, so don't test it again! Anyway, we got a series of all-white test films.

Without a manual machine, you can also shoot various test films (landscapes, portraits, banquets, beaches, etc.). ) by using exposure compensation. Remember to increase the exposure by more than 2 steps. There is no need to increase exposure when shooting in night scene mode, which can replace the test of the slowest shutter.

4. Finally, the software detects these all-black/all-white proofs. First, use acdsee, photoshop and other software to open all the white proofs, turn them into all-black films and save them back (don't mix them together). Then use Deadpixel test software to test all-white/anti-all-white proofs. First, set 60/250 with the default parameters. Anything over 60 is bright/dark noise. Remember their coordinates. /kloc-fixed noise above 0/can be replaced at that time, and fixed noise above 3/must be replaced within 7 days after purchase. If it exceeds 250, it must be changed. For the noise in the anti-black film, if there are many noises connected together, the old machine is probably ccd dust/oil leakage. If you want to compare the noise control ability of various cameras (without more than 60 noise points), it is suggested that each sample be tested with 5/20 parameters. The less noise, the same noise control ability of this camera in theory (the same shooting parameters).

5. By the way, how to test the bright spot of LCD. Use your LCD to browse any tested noiseless black film. If you can see bright spots on the LCD screen, you can ask for replacement, although it will not affect the photo quality.

6. Emphasize that the dc lens without lens cover must be tightly covered when shooting black films, and the cover must be thick, flat and opaque; Be sure to overexpose the white film for more than 2 files and clean the white paper; I believe I have made other details quite clear, so you might as well pay more attention.

On the difference between licensed goods and parallel goods;

1: According to the 800 820 6027 telephone provided by the manufacturer, the serial numbers of the fuselage (each unique) can be used to identify the authenticity.

2: The warranty card and camera serial number have been.

3. China Insurance Company's national warranty card, with three guarantees of after-sales service.

4. Simplified Chinese instruction.

(Don't open the seal)

I wish you a satisfactory DC and DV! ~