Editing Light meter (section)

{{short description|Device used to measure the amount of light}}
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[[File:Erkan Umut shoots Sibel Can.jpg|thumb|Use of a light meter for portrait cinematography in a Turkish music video set]]

A '''light meter''' (or '''illuminometer''') is a device used to measure the amount of light. In [[photography]], an '''exposure meter''' is a light meter coupled to either a [[Digital data|digital]] or analog calculator which displays the correct [[shutter speed]] and [[f-number]] for optimum [[exposure (photography)|exposure]], given a certain lighting situation and [[film speed]]. Similarly, exposure meters are also used in the fields of [[cinematography]] and [[scenic design]], in order to determine the optimum light level for a scene.

Light meters also are used in the general field of [[architectural lighting design]] to verify proper installation and performance of a building lighting system, and in assessing the light levels for growing plants.

If a light meter is giving its indications in [[lux]]es, it is called a "'''luxmeter'''".<ref>[https://www.merriam-webster.com/dictionary/luxmeter Merriam-Webster Dictionary - luxmeter]</ref>