I'm not sure why one would need a projection wedge, perhaps someone could explain what they are used for. The 21-Step is much smaller. Price can vary dramatically depending of if you want them to calibrate it on a densitometer for you.
----- Original Message -----
From: Ricardo Wildberger Lisboa
To: alt-photo-process-l@sask.usask.ca
Sent: Friday, December 09, 2005 3:48 PM
Subject: Step Wedge
Dear list members,
I was looking for step wedge films in the web and found the Stouffer 4 x 5" Projection one for $59.95 and Photographer's Formulary 21 Step Sensitivity Guide for $9.95.
Is there such a big difference in quality between them that justifies such a difference in price? Could I use either one? What do you prefer for your exposure tests?
Ric
Received on Fri Dec 9 16:46:47 2005
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