Professional Lighting Terms - Brightness

The intensity of light emitted by a luminance emitter in a given direction per unit of projected area is called luminance, denoted by L,

Unit candela. Per square meter. (Cd/m2)

Luminosity in the θ direction is L=Iθ/Scosθ

The brightness of the object is related to the intensity of the light source, and it is also related to the reflection ability of the object.



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