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[OM] The myth of 18 percent gray

Subject: [OM] The myth of 18 percent gray
From: Winsor Crosby <wincros@xxxxxxxxxxx>
Date: Tue, 22 Mar 2005 15:00:46 -0800
One thing noticed by people who are now using histograms on cameras and 
in software is that metering something that is evenly lit puts all the 
exposure to the left of the center of the histogram. I was surprise to 
find that meters are really calibrated to 12 percent gray which is a 
half stop away. Here is a better explanation than I can offer:

http://www.bythom.com/graycards.htm



Winsor
Long Beach, California, USA

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