Gray cards : the 12% - 18% controversy

Started Apr 13, 2013 | Questions thread
xpatUSA
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Re: Gray cards : the 12% - 18% controversy
In reply to cquarksnow, Apr 13, 2013

cquarksnow wrote:

Given spot-metering with a Merrill based camera, what percentage would seem appropriate for a gray card ?

The well-respected Doug Kerr covers the subject at length here:

http://dougkerr.net/pumpkin/articles/Exposure_metering_18.pdf

and at even greater length here:

http://dougkerr.net/pumpkin/articles/Scene_Reflectance.pdf

The answer is not obvious, but it will be in there somewhere . . cuz he's the MAN!

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Regards,
Ted http://kronometric.org
SD9, SD10, EF-500, GH1.

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