yes or no?

GreatwhiteNorth

Global Moderator
Staff member
I've heard it said more than once that mirrors eat light.
IDK if that's true or not - but the claim has been made more than once by people with better light meters than I.

Flat white paint gets my nod.
 

Dirty Harry

Well-Known Member
No. In basic terms, light has to pass through the glass of a mirror to reach the reflective coating on the back, and then pass back through the same glass. That thin glass will refract and scatter some light every which way due to impurities, micro scratches in the glass/reflective coating and the angle the light is. Also due to that, it is possible to have a hot spot reflected back.
 
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