I want to buy a digital camera. What are the main parameters for buying a digital camera? The more comprehensive the better. Thank you.

When buying a digital camera, please pay attention to the following aspects:

1, CCD size, which is the key to imaging quality. The larger the size, the better the imaging quality. Generally choose 1/2.5 inches or more. 11.8 or11.7 inch is better.

2. Effective pixels of CCD. The effective pixels of CCD are generally above 5 million. 8 million is enough for ordinary families, and now there are more than 6.5438+million. The function of pixel size is how big a photo can be printed. High-quality photos with a resolution of 5 million pixels and a maximum print size of 50 x 75 cm (20x30 inches). Pay attention to the high quality, that is to say, it is not bad to print a larger one. Do you think that ordinary people need to use100000 pixels? In fact, five or six hundred million is enough.

3, lens size. 3 to 12 times optical zoom, generally 3 to 4 times is enough, and more than 6 times is the telephoto machine; Choose a wide-angle 28mm lens size; Telephoto choose 200mm to 400mm and don't go to digital zoom. Of course, it would be better if we can have a wide angle of 28mm and a telephoto of more than +300mm, which can be more suitable for shooting in various occasions and realize the desire to travel around the world in one mirror, but there are too few such models, only a few models, and there are not many objects to choose from.

4. Display screen. 2.5-inch display, more than 200,000 images, the display effect of this display is quite good; Of course, there is also a rotatable display screen to choose from, and the rotating screen will bring more convenience to your framing. It depends on the size and also on the pixel. Canon's largest is 3.0, but the pixel is only 1.7 million, and the effect is not very good. If you buy a 65438+700,000-pixel display, 2.5 is better than 3.0, and you can't be greedy. Of course, like Sony Panasonic's 3.0-inch, 230,000 pixels, the effect is particularly good.

5. Animation function. Support mainstream animation function with 640×480 pixels and more than 30 frames per second. It would be better if you can take still photos, do optical zoom, do optical anti-shake, edit animations and cut still photos after shooting.

6. Manual function. If manual operation is required, it depends on the manual function (M, A and S). It depends on everyone's hobby. After all, most people still like full automation, but if you want to learn photography, the more powerful the manual function, the better. It is best to have aperture priority, shutter priority and manual exposure.

7. Body size (shape and color), battery type (capability), anti-shake and so on. If you want an anti-shake model, you should generally choose an optical anti-shake model. Batteries are usually lithium batteries. All right.

Of course, there are aperture size, shutter speed, sensitivity and so on. But if there are no special requirements, these configurations will match the grade of the whole machine. To be high, you need a large aperture of F2.8, a high-sensitivity ISO3200, a 60-second slow shutter, a 1/4000-second fast shutter and so on.

In a word, lens, pixel and image processor are more important ~ Now digital cameras are all good, and Canon, Sony and Nikon 2000~3000 are generally enough (in fact, there is no special requirement 1500+ is enough) ~

It is recommended to choose a general household card machine: small and stylish, easy to carry and control, and some with double anti-shake and 28mm wide angle. Sony T 10/T50, Panasonic FX07/FX50 and Canon IXUS850 are all very good card machines.