I have a vague memory of this being discussed a long while back. Maybe a
year or so. I think the conclusion was that Photoshop has a real limit at 8
bit/channel.
There may have been words of another editing package that did handle 16
bit/channel, but I'm not sure. And I'm too lazy to check the archives...
Maybe others have a clearer memory than I.
Jostein
> -----Original Message-----
> From: Michel Adam [mailto:[EMAIL PROTECTED]]
> Sent: Sunday, October 07, 2001 10:28 AM
> To: [EMAIL PROTECTED]
> Subject: Re: Cleaning up 67 slides in Photoshop ?
>
>
> I am scanning in RGB mode, output to TIFF files. If I pick
> 24bit color, I can
> apply filters, but if I save with more than 24bit (still in
> RGB), then I can't use any filters.
> The help in Photoshop says as much (no filter in higher than
> 8bits/channel), but does not
> explain why, or how to get around this real or perceived limitation.
>
> I guess my question is: is IT a real limit, or a perceived one?
>
> And if perceived, what about getting around it with more than
> 12 or 16 bits per
> channel?
>
> Michel
>
> > From: "John Coyle" <[EMAIL PROTECTED]>
> > Subject: RE: Cleaning up 67 slides in Photoshop ?
>
>
> > Hi Michel:
> >
> > On Tuesday, August 07, 2001 5:34 PM, Michel Adam
> [SMTP:[EMAIL PROTECTED]] wrote:
> > >
> > >
> > > If I scan with the Agfa Duoscan T1200, I can produce TIFF
> files with more
> > > than 8 bit
> > > per channel, but when imported in Photoshop, all the
> filters are grayed out.
> >
> > Are you scanning in Indexcolour mode? I find that only RGB
> colour mode will
> > allow the use of manipulation with filters etc., in Photoshop SLE
> >
> > <SNIP>
> > >
> > > Michel
> >
> > John Coyle
> > Brisbane, Australia
>
>
> -
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