Through-the-lens metering

Rarity: Common

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At a glance

Class

Invention

Domain

Science and technology

Knowledge cost

4

In collections

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What Wikipedia says

In photography, through-the-lens metering (TTL metering) refers to a feature of cameras whereby the intensity of light reflected from the scene is measured through the lens; as opposed to using a separate metering window or external hand-held light meter. In some cameras various TTL metering modes can be selected.

Excerpt from the Wikipedia article “Through-the-lens metering”, under the CC BY-SA 4.0 license. Read the article on Wikipedia