In a message dated 10/12/2010 10:19:08 GMT Standard Time, [email protected] writes:
I've downloaded the reduced-size PDF and, although not very obvious, there is loss of quality. See the attached comparison and see how sharpness is reduced on the optimized capture at the right side. My goal was to create the highest possible quality manuals, using the big sharp scans found at KO4BB website. I'd prefer to release them as good (and big) as possible so that anyone who needs it can reduce the size (always at a cost). The optimization can be done at any time but the lost bits are lost forever, ------------- I've also found that the Adobe optimisation option needs to be used with care and subtle, and sometimes not so subtle, loss of quaility seems to be inevitable. I never use it now on files intended for distribution. Whilst modern scanners can produce excellent quality in terms of resolution etc the two big problems I've observed with them, and with the scanning techniques they seem to encourage, are the very large default file sizes they tend to produce and the much reduced contrast, with the latter usually being much more of a nuisance. Both seem to be due to the way in which everything gets treated as colour or greyscale and the only way I've found so far found of dealing with this on completed PDFs is to extract all the pages as TIF files and process them individually for contrast enhancement etc, and superfluous color depth reduction, in something like Photoshop or PaintShopPro. I've had some good results with this but you sure need one heck of a lot of patience and spare time, so mostly these days I give thanks for large hard drives and just try to live with it:-) regards Nigel GM8PZR _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
