Cameras need focus and exposure, why don’t cameras

Cameras are equipment used to take pictures in our daily lives. Videographers will have a camera of their own, and they like to take pictures of every bit of life.

People have discovered that there is no need to focus and expose when using a camera. Why is this? In fact, the process and principle of camera shooting are similar to that of photography. During the shooting process, you must always pay attention to focus and exposure. However, because it realizes "automation", manual operation is not required.

The camera relies on the close cooperation of its internal microelectronic processor, optical components and other accessories to achieve automation of focus and exposure. When the camera is turned on, its "infrared autofocus system" starts working. The system emits beams of infrared rays to horizontally scan the photographed target from near to far. At the same time, the electronic system controls the camera lens to move back and forth from near to far. Once the infrared beam hits the photographed target, it will immediately reflect back, triggering the electronic system to mechanically adjust the camera lens to the optimal position, thus automatically completing the "focus."

At the same time, the "shutter electronic system" starts, thereby opening the shutter and exposing in time. If there is insufficient light at the scene, the camera can also automatically turn on the flash to obtain the best camera effect. The size of the aperture and the length of the exposure time are also continuously set automatically during the photography process through optical components and electronic systems, and must be adjusted manually.

As the times change, our technology has gradually become more powerful, and many things have become fully automated, which makes our lives much more convenient and does not require us to set up too complicated settings.