Photography Mastery

The art and science of capturing light to create images.

Greek "phos" (light) + "graphē" (drawing) — "drawing with light."

Aperture, shutter speed, ISO — the three factors controlling exposure.

The opening size of the lens controlling light entry.

In f-stops (e.g., f/1.4, f/2.8, f/4, f/8, f/16).

Lower number = larger opening = more light.

Wider aperture (lower f-number) = shallower depth of field.

The range in front and behind the subject in acceptable focus.

A narrow zone in focus; common in portraits.

Wide zone in focus; common in landscapes.

Duration the sensor is exposed to light.

In fractions of seconds (e.g., 1/1000, 1/60, 1") or full seconds.