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Subject: Re: raw 3.1 professional custom profiles for highend digital cameras



I've read the posts with great interest and care, but I am still confused about the statement that digital is linear and then seeing that in order to get a bright white I should only open 2 1/3 stops from a direct reading with my spot meter. The direct reading corresponds to Zone V so if it's linear and I want to have that tone shown as Zone VIII, shouldn't I open up 3 full stops and if I want it Zone IX, shouldn't I open up 4 full stops. This is using a spot meter calibrated to expose a gray card with a resulting image of middle gray (128).Following that same procedure, If I photograph the white side and open 4 full stops I get 90% white (230). Since my printer can print tones up to 255, shouldn't it be just under 5 stops to still be below paper white and blown highlights in the image. I consider a highlight to be Zone VIII-IX.

My incident meter has to be set at ISO 100 and my Spotmeter set to ISO 200 to give the same middle gray at 50% and blank white at 100%. If I'm thinking alone the wrong lines, can someone steer me in the right direction?

Your friend in Photography,

Johnny Eades

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