What is the difference between lightness and luminance? I am having trouble understanding it. If illuminance is how bright the light perceived to be. Then if we double luminance, we would get a light that is doubled in brightness perceived, isn't it? Then why do we introduce this new concept lightness?
Nina
@PandaX I found a video that may answer your question, please check it out:
What is the difference between lightness and luminance? I am having trouble understanding it. If illuminance is how bright the light perceived to be. Then if we double luminance, we would get a light that is doubled in brightness perceived, isn't it? Then why do we introduce this new concept lightness?
@PandaX I found a video that may answer your question, please check it out:
https://www.youtube.com/watch?v=tq2y2BseUaE
In a word: Lightness is a relative term.