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

paul swed paulswedb at gmail.com
Fri Dec 10 18:13:13 UTC 2010


DJVU does work well but is quite uncommon.
Every PC shipped these days seems to have adobe on it.

On Fri, Dec 10, 2010 at 11:16 AM, K. Szeker <szeker.k at gmail.com> wrote:

> 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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