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#21
May 12th 08, 01:16 AM
posted to rec.photo.darkroom
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Screen angles
On 5/11/2008 5:09 PM David Nebenzahl spake thus:
By the way, the standard screen angles for 4-color (CMYK) printing a K (black): 45° M (magenta): 75° Y (yellow): 90° C (cyan): 105° Interesting explanation of screen angles can be found at http://www.dtp-aus.com/hlftone.htm (scroll down to "Screen(#) Ruling and Angles"). Interestingly, it's not just a matter of reducing moiré effects; the screen angles are selected to create "rose" patterns which, apparently, are the least bad alternative (there will always be some kind of pattern generated by multiple halftone screens, and this is thought to be the most pleasing one). -- The best argument against democracy is a five-minute conversation with the average voter. - Attributed to Winston Churchill 
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