What is the imaging principle of the camera?

The lens of the camera is equivalent to a convex lens, and the light from the object passes through the lens of the camera and converges on the film to form an inverted and reduced real image. Compared with traditional cameras, traditional cameras use "film" as the carrier of recording information, and the "film" of digital cameras is its imaging photosensitive device, which is integrated with the camera and is the heart of digital cameras.

Digital cameras use photosensitive devices to convert optical signals into electrical signals, which are recorded on memory cards after analog-to-digital conversion.

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Maintenance of camera

1, when using, pay special attention to hold the camera tightly, and it is best to put the camera belt around your wrist or neck, so as to prevent the camera from falling off your hand and breaking to the ground, and also to prevent other strong vibrations from affecting its performance.

2. Prevent taking photos under strong sunlight or other strong light sources for a long time. Although CCD and CMOS are relatively resistant to strong light and high temperature, attention should be paid to prevent burns or injuries. Under special circumstances, if strong sunlight or strong light source cannot be avoided, try to shorten the photographing time.

3. Stay away from strong magnetic and electric fields. Strong magnetic field or strong electric field will affect the normal operation of circuits in digital cameras, and even cause failures. So don't put the digital camera on TV, stereo, induction cooker and other electrical equipment with strong magnetic field and strong electric field.

4, waterproof and moisture-proof. When used in high temperature and high humidity environment, the lens is easy to be moldy and the circuit is easy to fail. If the camera is used in a humid environment or accidentally gets wet, it should be dried or blow-dried in time.

5. Smoke and dust. Don't use it where there is a lot of smoke. If you have to use it in this environment, you should clean it up in time. Cover the lens cover in time when taking pictures.

References:

Baidu encyclopedia-camera