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From the number "1.3" I think we can assme he means pdf distiller level 1.3. Even when creating a pdf file it you want to preserve transparancy well it is better to use pdf distiller level 1.5.
I missed the beginning of this so I'm might be way off base: Rasterizing a pdf into photoshop will convert everything into cmyk. If you really needed a rasterized pdf that had spot colors I would try rasterizing a pre-separated pdf, one channel at a time and them combining into a dcs2 file.
Illustrator uses a combination of placed raster art (if placed) and vector. Vector has define edges with a very small file size. If you rasterize all that is lost. To come even close to the edge quality of vector you need a minimum of 600 dpi, 1000dpf being perferable.
--alan
On Mar 6, 2004, at 9:53 PM, Dov Isaacs wrote:
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At 3/6/2004 09:09 AM, Afzal_Kottal wrote:
Dear All
I have a problem with rasterizing PDF with transparencies(made from illustrator) in my RIP.When I rasterise it is ok,but it looses quality as it becomes raster and also I cannot do it for spot colors.The PDF looks good and preflighting says "No Error".
The RIP is postscript level 1.3 and supports PDF 1.4.On another rip which is older version
Any solutions let me know
Rgds Afzal
There is no such thing as a "PostScript Level 1.3". There is PostScript Level 1, PostScript Level 2, and PostScript 3. PostScript Level 1 RIPs were last licensed by Adobe in the early 1990s!
- Dov
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