Understanding Stops and Aperture Values

Front

Example: Changing from f/2 to f/4

Back

2 stops less light

Front

Example: Changing from f/1.4 to f/2.8

Back

2 stops less light

Front

Example: Changing from f/4 to f/2

Back

stops more light

Front

Example: Changing from f/2.8 to f/1.4

Back

2 stops more light

Front

Example: Changing from f/4 to f/1.4

Back

3 stops more light

Front

Example: Changing from f/1.4 to f/4

Back

3 stops less light

Front

Aperture and depth of field relationship:

What is the effect on DOF when changing from a high numerical value to a lower numerical value aperture?

Back

aperture (smaller f-number) = shallower depth of field

Front

Aperture and exposure relationship:

what effect will changing to a lower numerical value aperture have on the exposure?

Back

aperture = more exposure = more light = brighter

Front

Aperture value f/1.4 to f/4

Back

3 stops less light, deeper depth of field

Front

Aperture value f/4 to f/1.4

Back

3 stops more light, shallower depth of field