Definitions

Aperture  

Noun

An opening, hole, or gap. A space through which light passes in an optical or photographic instrument, esp. the variable opening by which light enters a camera.

Depth of field  

Noun

The distance between the nearest and the furthest objects that give an image judged to be in focus in a camera.

Exposure  

Noun

The state of being exposed to contact with something. An act or instance of being uncovered or unprotected.

Framing  

Noun

The action of framing something. Frames collectively.

Composition  

Noun

The nature of something's ingredients or constituents; the way in which a whole or mixture is made up. The action of putting things together; formation or construction.