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jerrypiglet

Where does the exponential 0.45 come from? I did not see any 0.45 in this slide before.

lucida

@jerrypiglet We use 0.45 because it's a middle ground between the 0.4 exponent for dark adapted eyes and the 0.5 exponent for bright adapted eyes.

jerrypiglet

@lucida Soga! Thank you!