Traditional Culture Encyclopedia - Photography major - What do you mean by "AV file" and "M file" in the camera?

What do you mean by "AV file" and "M file" in the camera?

AV is the aperture priority mode, the aperture size can be manually controlled, and the shutter speed will be automatically adjusted according to the brightness setting.

M gear is a full manual gear, that is, you can manually control the aperture and shutter of the camera, and you can arbitrarily match two values to achieve the desired effect.