How to identify the quality of a camera?

1. First of all, you should choose based on the imaging quality

The imaging quality of a digital camera, in addition to the lens quality, largely depends on the pixel level of the imaging chip. The charge-coupled poles on the chip are called pixels. The more pixels there are, the higher the pixel level, the higher the resolution of the image, and the more delicate, clear, and layered the captured picture will be; conversely, the picture will be The more rough it becomes. The higher the pixel level and resolution, the higher the grade and price of the camera, and the better the image quality. When purchasing a digital camera, if financial resources permit, the higher the resolution, the better; but do not blindly pursue high resolution, but should do what you can according to the intended use. Generally speaking, if you are shooting to display it on a computer screen or apply it to web design, then you can choose an economical and practical camera with a resolution such as 640×480; if you want to output images, the photos must be relatively clear. , realistic, you should choose a mid-range or above resolution camera model (such as 1024×768); if you are a professional photographer or editor and reporter with higher requirements for picture quality, you should choose a high-resolution camera (such as 1620×1200 type) camera.

2. Selection of storage media (number of photos that can be taken)

The storage capacity of a digital camera determines the number of photos you can take. If economic conditions permit, storage The bigger the quantity, the better. At present, most cameras can be equipped with a removable memory card (the body has a PcmcLA) slot, which brings convenience to the expansion of capacity. Like film, you can replace it with another memory card after shooting to continue shooting, which greatly increases the storage capacity. Number of shots.

3. Automatic zoom function

In recent years, more and more digital cameras have adopted CCD and TTL automatic focusing methods, which further improves the focusing accuracy and greatly improves the picture quality. improvement; in terms of exposure modes, there are shutter-priority automatic exposure, aperture-priority automatic exposure, and manual exposure modes. Consumers can choose according to their habits, hobbies, and their own photography skills. CCD type digital cameras can be divided into two types: surface CCD type and scanning linear CCD.

CCD area digital cameras have the advantage of fast shooting speed and have no special requirements for shooting moving scenes and using flash. Linear CCD cameras have extremely high resolution, but the exposure time is long and cannot shoot moving scenes. Flash photography is also not possible. Therefore, the scanning linear camera can only be used for still life photography. The purchase should be based on the intended use.

4. Lens quality

Currently, most digital cameras use built-in zoom lenses and use aspherical lenses in the lenses. The aperture range also ranges from 2 to The 3rd gear has been increased to about 6th gear; the diameter of the lens has also been significantly increased, and there are many types of zoom lenses, which have greatly improved the shooting flexibility and imaging quality; some cameras also have electronic zoom functions, which can improve ultra-high speed. The long-distance shooting capability is especially suitable for field expedition personnel.

5. LCD display function

Digital cameras with LCD display function allow people to browse and edit photos conveniently, and also allow you to preview and review the subject before shooting. Delete unwanted parts to make the most of your camera's limited storage before downloading to your PC. At present, the display methods of monitors include enlarged display, slide show, continuous playback, multiple simultaneous displays, etc.; display screens are usually 1.8 inches and 2 inches, and some products have reached 2.5 inches. The larger the display window, the better.

6. Special functions

At present, some digital camera products have auxiliary functions such as sound recording function, macro shooting function, image processing function, high-speed continuous shooting function, etc., which provide consumers with Provides a wider range of choices.