Re: solarplate stochastic screen - Clarification
There are perhaps others that can explain it in more detail—perhaps Dan Burkholder, I think he used Ice Fields himself. My understanding from talking to Peter Elzey at Copygraphics a couple of years ago is that Ice Fields was an alternate program to rasterize an image for the imagesetter—it takes the pixels from your Photoshop image and turns them into black and white dots to simulate tone using a stochastic pattern. It used a different algorithm to do so than the native software of their imagesetter. I believe that what they liked about it was that it eliminated a problem at the 50% tone that was causing digital noise in the negatives. However, in doing so, it seemed to put the problem elswhere in like the 30% and 70% tones—though the noise was much less. No digital output device is without its own little quirks and problems. Best Wishes, Mark Nelson Precision Digital Negatives - The System PDNPrint Forum at Yahoo Groups www.MarkINelsonPhoto.com In a message dated 2/22/07 5:37:00 PM, newcombr@uga.edu writes: Asking for a NON "Ice Field" made screen from CopyGraphics has put a kink in me getting a screen - that request is apparently causing them some kinks. Would anyone mind helping me understand what the Ice Field does and why I don't want that - if indeed its enough of a conceren for me to look elswhere for a screen. Thank you for helping me over my ignorance bumps/mountains... Robert Newcomb ************************************** AOL now offers free email to everyone. Find out more about what's free from AOL at http://www.aol.com. |