Exposure (photography)

In photography, exposure is used to mean two things. Photographic film or sensors have a certain senitivity. That means that a certain amount of light needs to be able to reach the film or sensor, before the image is correctly exposed. It is measured in units of lux-seconds (symbol lx ⋅ s). An exposure can also refer to a photo exposed that way.

800px|thumb|center|Longer exposure times mean a lighter image.

Category:Photography