Headshot, portrait, street and documentary photographer in NYC and Jersey City

alastair.arthur@gmail.com

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Terminology

Aperture - The size of opening that lets light into the camera.

Depth of Field - The range of distance from the camera that is deemed to in-focus (or acceptably sharp). A shallow depth of field means that much of the image is out-of-focus.

Exposure - The level of brightness of an image.

F-stop - Measurement of aperture, shown as a fraction. f/2 is a relatively large aperture, f/16 is relatively small.

ISO - The sensitivity of a film or camera sensor to light. Lower ISO means less sensitivity (so the image is darker) but also less grain or noise in the image.

Metering - The action of a camera adjusting the exposure (brightness) level using ISO, aperture and/or shutter speed.

Shutter Speed - The duration that the camera sensor is exposed to light whilst taking an image.

Some Terminology