Re: solarplate
Jon, I spoke with Peter at Copy Graphics about the fabrication of aquatint screens on their imagesetter a few years ago. I could be wrong on this, but it seems that the users were having best luck with using a line screen output for the aquatint screen rather than a stochastic method when used in combination with a negative that was made with diffusion dither or stochastic method. It appeared that there was less problem with interference patterns I believe. Best Wishes, Mark Nelson Precision Digital Negatives - The System PDNPrint Forum at Yahoo Groups www.MarkINelsonPhoto.com In a message dated 1/23/07 11:57:08 AM, jon@terabear.com writes: 80% density is the rule of thumb. Not sure what the standard 'solarplate' one uses in terms of dpi, but Duane at Copy Graphics in Santa Fe would know. He's who I've been going through for mine. I believe the standard screens are something like 300 or 400 dpi... http://www.copygsf.com/ Any service bureau with an imagesetter should be able to produce these kinds of screens, however. I've been using an 1800 dpi stochastic screen using an Olec exposure unit. I don't recommend it for learning one since there are many more technical challenges with using the finer screen -- solid contact becomes all the more critical, but I think better results. Jon
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