"shAf" wrote:
>with software (Adobe gamma or video card software) you are tweaking an 8bit
>LUT. As an analogy, would you choose to tweak RGB gamma in Photoshop
>twice, or just once? You are doing a bit of the same thing when you adjust
>the color LUT once, and then ask for compensation or adjustments in
>Photoshop. Rather than adjust the LUT twice, most monitor calibration
>softwares will first give you an option for first putting the monitor
>temperature exactly where you want it with
hardware adjustments ... then the calibration (or characterization) software
(and/or puck) does its thing with characterization and gamma.
I regard shAf as one of the color experts on this List, but his expertise
sometimes leaves a few of us "seat-of-the-pants" fliers sitting back on the
apron(tarmac), so to speak.
FE, I'm a bit confused about an 8-bit LookUpTable. Is that 8-bits per
chanel? But how does an 8b LUT compute in a 48-bit scan?
I'll admit that I'm not well-read on CMS, and what I *do* read seems to go
in one head and out the other because I usually can't relate to or apply it,
since I'm not heavily involved in printing (which I totally understand most
film-scanners are). I'd have let this thread pass, but the 8-bit LUT caught
my attention. Sorry, shAf. :-)
Best regards--LRA
>From: "shAf" <rarewolf@roadrunner.nf.net>
>Reply-To: filmscanners@halftone.co.uk
>To: <filmscanners@halftone.co.uk>
>Subject: Re: filmscanners: reply regarding Sony 420 G monitor
>Date: Fri, 10 Aug 2001 09:36:22 -0230
>
>Rob writes ...
>
> > > > >It is hard to imagine this Sony monitor not having the ability to
>tweak
> > > > >the individual guns (... is this some type of "consumer" model?
>...).
> >
> > Is this stuff necessary? I discovered that under Win98SE just about any
> > fully supported video card can do the required gamma adjustments. The
> > monitor doesn't have to do anything AFAIK. :-7 The profile just tweaks
>the
> > RGB levels.
>
> Not necessary ... but advisable. Remember, with software (Adobe gamma
>or video card software) you are tweaking an 8bit LUT. As an analogy, would
>you choose to tweak RGB gamma in Photoshop twice, or just once? You are
>doing a bit of the same thing when you adjust the color LUT once, and then
>ask for compensation or adjustments in Photoshop. Rather than adjust the
>LUT twice, most monitor calibration softwares will first give you an option
>for first putting the monitor temperature exactly where you want it with
>hardware adjustments ... then the calibration (or characterization)
>software
>(and/or puck) does its thing with characterization and gamma.
>
>shAf :o)
>
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