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First, from the imaging quality on choice

Digital camera image quality of, besides lens factors on the quality of the outside, depends largely on the imaging of the chip pixel level. Chip charge on coupling poles are called pixel, pixels number, the more pixel level is higher, the resolution of the images also taller, be taken picture performance is more exquisite, clear and distinct; Conversely, images appear less rough. Pixel level and distinguish the higher the quality and price, and the camera is taller, imaging quality also is better. The choose and buy a digital camera, in financial resources allow, the higher the better resolution, of course, But also don’t blindly pursuing high resolution, but should be based on the using USES hold. Generally speaking, your filming was used in computer screen, or application on the web page design, then choose such as 64 x 48 such resolution economic practical cameras, If you want to output images, clear and vivid pictures relative requirements, it should choose intermediate above high-resolution camera (such as 1024 x 768) model, If you are a professional photographer or editor of picture quality, the demand is higher, criterion should choose high resolution (such as 1620 x 1200 type) camera.

Second, storage media (can take a few) option

Digital camera storage capacity size decided what you can shoot the number of sheets, in economic conditions allow, under the precondition of storage the bigger the better. At present, most of the camera can be supporting the use of mobile flash, (fuselage PcmcLA) slots have, it brought capacity expansion to bring convenience, like film is same, after finishing change another memory to move on and greatly increase the number of sheets can take.

Three, automatic zoom function

In recent years, more and more digital camera adopted CCD, TTL auto-focusing way, further improve the focus precision, make the picture quality is distinctly improved; In exposure mode, the shutter preconditions type automatic exposure, aperture preconditions type automatic exposure, manual mode are, consumer can according to their interests and photography techniques choice. CCD type digital camera can divide again face CCD type and scanning linear CCD two kinds.

CCD face type digital camera has was faster the advantages of the filming activities scenery and flash use no special requirements, Linear CCD camera resolution is extremely high, but type exposure time longer, can’t filming activities scenery, also cannot undertake flash photography, therefore, scanning linear camera can only be used for filming, still when the choose and buy according to the intended use and decide.

Four, the lens of quality

Most current digital camera has adopted a built-in zoom lens, and in the lens used aspherical lenses, aperture rotary-switching number also by 2 — 3 gear improve to 6 files; about Lens diameter also obvious increase, zoom lens have multiple products, make the filming of flexibility and imaging quality has greatly increased, Some cameras also has electronic zoom function, it can improve the bodily shooting ability, to the field expedition staff particularly applicable.

Five, liquid crystal display function

Possess liquid crystal display function of digital cameras, can let a person easily browse editing photos, still can make you are shooting preview and first examine before subjects, remove unwanted part, in order to download to PC before, make full use of limited storage camera. At present, the display of the display mode have magnified appeared, slide show appeared, continuous play, rebalanced and showed way; etc. Display is usually 1.8 inches and 2 inches, some products up to 2.5 inches. The display window, it should be said that the better.

Six, special function

Currently, some digital camera products have sound recording function, macro filming function, image processing function, high-speed even pat function auxiliary functions, provides consumers with a wider choice space.