What is aperture, and what effect does it have on imaging effect?

Aperture: A device used to control the amount of light passing through a lens.

Its influence on the imaging effect is as follows:

1. In a dim scene, the aperture allows more light to enter the lens, which can make the imaging effect clearer.

2. Similarly, in the scene of intense sunlight, the aperture can control less light to enter the lens, which can avoid the image explosion caused by intense light.

3. The specific parameters of the aperture are generally expressed by the value of f, and the relationship between the value of f and the size of the incoming light is opposite. The greater the F value, the less light enters the lens, and the smaller the F value, the more light enters the lens. (As shown in the attached figure-the white area in the middle of the ring indicates the area where light enters)