Re: two questions about gum
Charles, It would be best to cut pigment rather than exposure. Exposure for most processes should really remain constant unless you are trying to just lay down a light coat. Otherwise, you blow out your highlights. Best Wishes, Mark Nelson Precision Digital Negatives - The System PDNPrint Forum at Yahoo Groups www.MarkINelsonPhoto.com In a message dated 9/25/07 5:48:09 PM, cryberg@comcast.net writes: Folks, I have noticed that my Daniel Smith Perylene Red stains the margins fairly heavily EXCEPT when it is the first layer. Is this kind of behavior common? Am I missing something? It took me quite a few prints to determine this since I have been printing that layer 2nd or 3rd and bemoaning the stain. Then I realized my 10x10 test chart showed no stain and made a print with the Magenta layer first--no stain. I am printing on unsized Fab Aristico. On a related topic: After determining the exposure time and curve for each of the three colors I made a test print which was WAY too dark. Cutting the exposure time by nearly 2 stops helped. Katharine Thayer confirmed off-list that it is customary to have to cut back, though if I remember right she suggested using less pigment rather than cutting exposure. Is there any rule of thumb for cutting either the pigment or the time? Thanks. Charles Portland, Oregon ************************************** See what's new at http://www.aol.com
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