In Aperture Priority Mode?

Aperture priority, often abbreviated A or Av (for aperture value) on a camera mode dial, is a setting on some cameras that allows the user to set a specific aperture value (f-number) while the camera selects a shutter speed to match it that will result in proper exposure based on the lighting conditions as measured by ...

When would you use aperture priority mode?

2. When Shooting Portraits: Aperture priority is best when you are shooting in natural light or when shooting using continuous lights. In this scenario, the camera will be able to choose the right shutter speed for you based on the available light.

What is the difference between aperture priority or shutter priority mode?

Aperture Priority (A) lets you choose the aperture (aka f-stop) setting you want, but the camera chooses the shutter speed. Shutter Priority (S) lets you choose the shutter speed you want, but the camera chooses the aperture setting.