How to see the parameters of digital camera? What should I pay attention to when buying?

First, we must first choose from the imaging quality.

In addition to the lens quality, the imaging quality of a digital camera largely depends on the pixel level of the imaging chip. The charge-coupled poles on the chip are called pixel points. The more pixels, the higher the pixel level, the higher the resolution of the image, and the more delicate, clear and distinct the picture. On the contrary, the coarser the picture. The higher the pixel level and resolution, the higher the grade and price of the camera, and the better the imaging quality. When buying a digital camera, if financial resources allow, the higher the resolution, the better; But don't blindly pursue high resolution, do what you can according to the purpose of use. Generally speaking, you shoot to display on a computer screen or design on a web page, so you can choose an economical and practical camera with a resolution of 640×480. If you want to output images and require photos to be relatively clear and realistic, you should choose a camera with a resolution above the middle range (for example,1024× 768); If you are a professional photographer or editor, you should choose a high-resolution camera (such as model 1620× 1200).

Second, the choice of storage media (the number of pictures that can be taken)

The storage capacity of a digital camera determines the number of photos you can take. The larger the storage capacity, the better. At present, most cameras can use a portable memory card and a slot (PcmcLA is installed on the camera body), which brings convenience to the expansion of capacity. Like a negative, you can change another memory card to continue shooting after shooting, which greatly increases the number of shooting.

Third, automatic zoom function.

In recent years, more and more digital cameras have adopted CCD and TTL auto-focusing methods, which further improve the focusing accuracy and greatly improve the image quality. In the exposure mode, there are three modes: shutter priority automatic exposure, aperture priority automatic exposure and manual exposure. Consumers can choose according to their own habits and hobbies and their own photography skills. CCD digital cameras are divided into two types: area CCD and scanning linear CCD.

The advantage of CCD area array digital camera is its high shooting speed, and there is no special requirement for shooting moving scenes and using flash. The resolution of linear CCD camera is very high, but the exposure time is long, so it is impossible to shoot moving scenes or flash photography. Therefore, the scanning linear camera can only be used for still life shooting, and the purchase depends on the usage.

Fourth, the quality of the lens.

Nowadays, most digital cameras use built-in zoom lenses, in which aspherical lenses are used, and the number of apertures has also increased from 2-3 to about 6. The aperture of the lens is also obviously enlarged, and there are various zoom lenses, which greatly improves the shooting flexibility and imaging quality; Some cameras also have electronic zoom function, which can improve the shooting ability of ultra-long distance, especially suitable for field researchers.

Verb (abbreviation of verb) LCD display function

Digital cameras with LCD display function can facilitate people to browse and edit photos, and also allow you to preview and check the subject before shooting, and delete unnecessary parts, so as to make full use of the camera's limited storage capacity before downloading to PC. At present, the display modes of the monitor include enlargement, slide show, continuous play and simultaneous display of multiple pictures. The display screen is usually 1.8 inch and 2 inch, and some products have reached 2.5 inch. The bigger the display window, the better.

Sixth, special functions

At present, some digital camera products have auxiliary functions such as recording function, macro shooting function, image processing function and high-speed continuous shooting function, which provides consumers with a broader choice space. Canon's digital camera is really better, which is recognized by the market and netizens. Its main features are rich product lines, high imaging quality, high cost performance and stable machine quality, but the appearance is not necessarily fashionable (the key depends on personal preferences). Canon cameras are Japanese brands, but many of them are made in China. Canon and Nikon are the first-line manufacturers of digital cameras in the world, and their quality is relatively certain.