Traditional Culture Encyclopedia - Photography and portraiture - What is an aperture? What is the function of aperture?

What is an aperture? What is the function of aperture?

Aperture is one of the important parameters of a camera. Indicates the aperture size of the incident light of the camera. The size of the middle hole in the vernacular lens.

The aperture size indicates how much light the camera enters. This is an important parameter for adjusting exposure. Another function of the aperture is to determine the depth of field (the range from the nearest to the farthest in the picture).