LearningCausesv1

A wider aperture admits more light

The opening size changes exposure and depth of field.

Output

A brighter exposure with shallower depth of field

Input

A lens changed from f/8 to f/4

Input

A lens changed from f/8 to f/4

A brighter exposure with shallower depth of field

Relationship

A smaller f-number represents a wider opening. Moving two full stops wider admits four times as much light for the same shutter time.