2008/11/30 Frederick Noronha [फ़रेदरिक नोरोनया] <[EMAIL PROTECTED]>:
> Sorry to raise what might be an off-topic query here. Is there any
> tutorial (Lyx- or Free Software-connected) tutorial on how to prepare
> your photos for offset printing? Many thanks. FN
I don't think your photos need special preparation. They should be in
high-resolution. The problem here is colour separation done properly
with correct raster angles on particular colour plate. In professional
application such as InDesign or PageMaker you can select colour
separation to Postscript and you configure raster angle for every
colour. I think this could be done in Ghostscript, but I do not know
the procedure.
Applications driving phototypesetter should be able to prepare such
separation from any colour PDF prepared for printing. If your print
service do not have phototypesetter and they try to prepare film in
laser printer it could be a large problem. Laser printers always have
0 angle raster, and if they are 1200 dpi they may poorly simulate
raster angles for 300 dpi and about 150 lpi I think.
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Manveru
jabber: [EMAIL PROTECTED]
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http://www.manveru.pl
