P3D Re: Sunny 16 rule, baaaaah

[Michael Kersenbrock <michaelk@xxxxxxxxxxxx>]

Greg Wageman wrote:

> middle gray, in the zone system).  Tom's suggestion to meter one's hand
> works because, by coincidence, the average reflectivity of (Caucasian?)
> human skin closely approximates the reflectance of an18% gray card.

I think there was supposed to be a fixed offset (a stop or two, I forget)
from the hand-measurement.  Also supposedly, everybody's hand (*PALM* side)
has about the same reflectivity, even if the other side may differ significantly.

Or so I recall -- from the olden days (not that long ago, but I haven't used
that trick for some time).

Mike K.


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