What are the common problems with cameras?

Lead: The camera is made by Baird, Ferro? Farnsworth and Villatimir? Sforokin invented it independently. From the 1980s, when foreign analog monitoring products entered the Chinese mainland market, foreign brands and products almost dominated the world in 20 years. Although some national enterprises have participated in the competition in this industry, they have never had the opportunity to form the mainstream of national brands.

What are the common problems with cameras? 1. Check the optical viewfinder and LCD screen. Before turning on the power supply, visually inspect them for scratches and abrasions and see if there are many handprints. Many handprints indicate that someone has used them before; Then turn it on and check it again to see if there are any bad spots on the LCD screen, whether the color is saturated and natural, and whether the image is clear.

2. Check the shell of the mini camera for hard scratches and paint loss. If there are any of the above phenomena, it may indicate that someone has used them before or encountered them during transportation. You'd better find a dealer to change such a camera.

3. Check the optical zoom lens and press the zoom switch several times alternately from T (telephoto, longest focal length) to W (wide angle, shortest focal length). At this time, you should hear subtle, subtle? There is continuous mechanical operation sound, and the monitoring picture on the LCD screen should change uniformly from large to small or from small to large. If the sound of mechanical operation is not sluggish and the monitoring picture is not jumping and shaking, it indicates that the performance is good.

4. Check the focusing performance of the lens, aim the lens at something nearby, such as a pen on the desk, to see if it can focus quickly and smoothly, and then enlarge the optical zoom to see if it can focus quickly and smoothly. If the smooth focusing of close-up objects is slow and laborious, it is recommended that you do not buy such a camera.

5. Check the basic video recording function, put the video tape into the camera, start the camera, fast forward and fast backward to see if you can advance and retreat freely, then record the surrounding environment for a few minutes, then stop and rewind, and play back the video you just shot to see how the playback effect is. If you see that the playback image is as clear, delicate and bright as the shot image, and the picture is stable, it means that the recording and playback function of this camera is normal. We must pay attention to this. After all, the recording and playback effect is what we care most about!

6. Check the accessories of the mini-camera, and carefully count the random accessories indicated in the manual, so as not to find something missing when you buy it, and you have to go back and ask for it, which will bring a lot of inconvenience.

7. Carefully verify whether the serial number of the product on the camera is consistent with the serial number on the packaging box.

8. Buy other accessories

Battery: You need to buy a spare battery. You need to buy two more batteries to increase the shooting time as much as possible. In addition, you must carefully look at the capacity after buying a large-capacity battery.

Video tapes: I need to buy some video tapes. How many boxes to buy according to your own needs, the price is not expensive. I suggest buying more boxes to avoid running out later.

IEEE 1394 acquisition card: You need to buy an IEEE 1394 acquisition card, otherwise you can't collect it in the computer. You don't need to buy a good one, just a normal one. 150 yuan will do it.

Memory card: The memory card that comes with it is generally only 8MB or 16MB. If you think the capacity is small, you might as well buy a larger memory card, such as 64MB, 128MB.

UV mirror and polarizer: It is best to buy UV mirror and polarizer, which add up to about 300 yuan. UV mirror can usually protect the lens, and polarizer can improve the shooting effect. Can darken the sky, highlight the clouds, and shoot for tourism? Add color? Quite a lot.

Tripod: If you need to buy a tripod, you should buy a sturdy tripod with a height of about 1.5 meters, because this height is convenient for the photographer not to look up.

Camera bag: You need to buy a camera bag. The principle is that you can put your mini camera, several camera belts, power cords, spare batteries, UV mirrors and polarizers and some other accessories. The lining of the camera bag is preferably sponge or flannel, because this can effectively reduce the impact caused by violent shaking and avoid damaging the camera.

Matters needing attention in purchasing digital video camera

1, you must invoice, and you can only participate in the national security after invoicing. Those who can participate in the national security must be licensed (if he dares to invoice you, it will prove that it is licensed). Also, it should be noted that some merchants say? You don't have to invoice, and you can spend more money to participate in the national warranty. Besides, we can help you repair it. ? That's a lie. If you don't invoice at this time, they may bring you parallel imports. Because you don't have an invoice, you can't participate in the national warranty. This is a dead letter. ) China's digital cameras can only participate in the national warranty with invoices. It's not much different from the invoice, so be careful to sail for ten thousand years.

After paying the money, when they bring the machine to you, tell them not to open it and let them open it themselves. Attention, some merchants said? If we don't open it, we must check it. What if the machine goes wrong without inspection? That's also a lie. Everything has been tested. Why do you need nationwide warranty? At this time, you may be given parallel imports, such as Gome's regular stores, which are all opened by buyers. So, you have to open it yourself first.