Aperture Value (Depth of Field)
This is when you can control the aperture
within the frame. It is all to do with the lens
diaphragm that opens inside the lens. The
bigger the size of the diaphragm opening in a
camera lens, the more depth of field the
photograph will have. The smaller the size,
the photograph will have more of a focus and
less of a depth of field.
Shutter Priority (Shutter Speed)
Shutter priority allows you to control the shutter speed.
It lets you choose a specific shutter speed while the
camera adjusts the aperture and ISO sensitivity to make
sure the photo has the correct exposure.
ISO needs to be controlled to help the aperture within
the photograph. ISO measures the sensitivity of the