Why 'more or less stopped using ISO'?

Started Feb 19, 2014 | Questions thread
crames Regular Member • Posts: 192
Re: Maybe this will help.

bobn2 wrote:

crames wrote:

bobn2 wrote:

What does 'white' mean?

White is the "reference white" used in the Lightness calculation.

How bright is it?

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It can be any brightness. Depends on the luminance, viewing conditions, etc.

When you're calculating Lightness, such as CIELAB L*, you're comparing the luminance of a color to the luminance of whatever you have chosen to be the reference white.

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