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Digital BW, The Print

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Re: [Digital BW] New Photoshop CS -- aka Photoshop 8

2003-09-30 by Mark Hahn

Not really... at least if you agree that the human eye can't 
distinguish between more than 16 million colors.  The real problem 
with 8 bits per channel is with the fixed precision math that is 
performed for each adjustment... you get rounding errors which become 
cumulative and destructive.  This is much reduced when calculations 
are done in 16 bit mode.

mark

PS  I am working on an image editing package that works at a fixed 64 
bit depth per channel and maintains butter smooth tones through out 
any number of adjustments... but it runs way slower than PhotoShop;)


--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Avron L. 
Gordon" <agordo@v...> wrote:
> Assuming you can do all your work  on an image in 16-bit,  is the 
image
> ultimately degraded when you convert it to 8-bit  to print?
> ----- Original Message ----- 
> From: "john eckenrode" <ejohn182002@y...>
> To: <DigitalBlackandWhiteThePrint@yahoogroups.com>
> Sent: Monday, September 29, 2003 1:59 PM
> Subject: RE: [Digital BW] New Photoshop CS -- aka Photoshop 8
> 
> 
> > that is reason enough to upgrade, that's killer
> > news!!!!!!
> >
> > john e
> > --- Martin Wesley <mwesley250@e...> wrote:
> > > Andre,
> > >
> > > Thanks for the announcement. The really big news
> > > here for me is the
> > > following from the Adobe site:
> > >
> > > "Comprehensive 16-bit support
> > > Perform more precise editing and retouching with
> > > expanded support for 16-bit
> > > images in core features, including LAYERS, brushes,
> > > text, shapes, and more."
> > >
> > > Finally layers in 16-bit mode!! Yeah!
> > >
> > > http://www.adobe.com/products/photoshop/
> > >
> > > Martin Wesley
> > >
> > http://www.carolyn.cc/Guests/MartinWesley/pages/MW_01.html
> > > http://www.borderless-photos.de/guests.html
> > >
> > >
> > > * -----Original Message-----
> > > * From: sceptre12345 [mailto:am1000@v...]
> > > * Sent: Monday, September 29, 2003 7:08 AM
> > > * To: DigitalBlackandWhiteThePrint@yahoogroups.com
> > > * Subject: [Digital BW] New Photoshop CS -- aka
> > > Photoshop 8
> > > *
> > > *
> > > *
> > > * Avalable in November.
> > > *
> > >
> > http://www.dpreview.com/news/0309/03092901adobecreativesuite.a
> > > sp
> > >
> > > Cheers,
> > > Andre
> > >
> > >
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