[time-nuts] 3586A HQ PDF Manual available -optimization-

K. Szeker szeker.k at gmail.com
Fri Dec 10 16:16:51 UTC 2010


Hi all,
why isn`t please, with respect to all working persones, the "DJVU-Formating
" better as all experiments to reduce some from datavolume? Regularly it
needs only ~10%-20% memory as pdf-files...
Best greetings!
Karesz

2010/12/10 <GandalfG8 at aol.com>

>
> In a message dated 10/12/2010 10:19:08 GMT Standard Time,
> rbarrioss at msn.com
>  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
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