On some camera models, you can find an advanced aperture priority mode with automatic ISO selection. This is what distinguishes it from the usual aperture priority mode, where the ISO is set by the photographer.
A very convenient mode for shooting on a bright day.
How aperture priority differs from shutter priority The main difference between aperture priority mode and other shooting modes is the aperture setting alone, which affects the depth of field.
The Av mode is based on the depth of field, which can be quickly changed in accordance with the requirements and conditions of photography.
This mode offers a quick change of photography genres based on the depth of field.
From landscape to portrait and back again with a slight turn of the aperture selector on the camera.
Aperture priority is most often used in portrait photography, street photography, and landscape photography. In all those cases where the depth of field must remain unchanged under changing lighting conditions.
Select it whenever a change in depth of field during shooting is unacceptable due to changing lighting conditions.
It is by operating the depth of field that the aperture priority mode differs from the shutter priority mode, which operates with time.
What are the pros and cons of shooting in this mode?
The main advantage of using the aperture priority mode is the speed of operating the camera and automatic selection of shutter speed and exposure.
You can easily click portraits on a summer evening, and as dusk falls and light decreases, the camera will automatically recalculate the exposure of the frame and shutter speed.
The depth of field will remain unchanged, since the aperture is specified explicitly, and the camera cannot change it.
No need to be distracted by changing light conditions until the shutter speed becomes too slow for handheld shooting.
This is the main advantage of this mode.
The disadvantages often include the need to control shutter speed to eliminate the appearance of blurring in photographs and movement.
Let’s be honest.
This is a semi-automatic mode and the need to control shutter speed is considered a minus.