Novice photographers should understand what aperture is.

Aperture is a lens that uses an aperture page to control the area where the lens can enter light. The aperture size of the lens has two main functions: first, the larger the aperture (the smaller the aperture value), the shallower the depth of field of the shooting scene, and the smaller the aperture, the greater the depth of field. You can control the depth of field by adjusting the aperture size when shooting. Second, the larger the aperture (smaller the aperture value), the greater the exposure at the same time. When shooting, you can increase the aperture to increase the shutter speed, or shoot normally in a dark place.

I hope to adopt.