RE: UGRA/UDACT-conforming displays [was: i1Display x i1Pro]
RE: UGRA/UDACT-conforming displays [was: i1Display x i1Pro]
- Subject: RE: UGRA/UDACT-conforming displays [was: i1Display x i1Pro]
- From: Roger <email@hidden>
- Date: Mon, 30 Mar 2009 20:53:12 -0400
Karl,
Do you mean to say that, depending on the presence of a hardware LUT in the
monitor, that the choice of one gamma (transfer function) over another may
or may not have an impact on banding?
Suppose, for example, that I have a monitor with internal 10bit LUT, and I
choose to calibrate with the "antique" (your words) L*, then it would not
matter what my choice of RGB Working Space is, such as AdobeRGB (2.2) or
eciRGB (L*) or ColorMatchRGB (1.8) on loss of levels?
Thank you in advance for taking a few minutes of your precious time to
briefly explain,
MfG / Roger
> This depends solely on the characteristics of the panel. Unfortunately
> a lot of LCD monitor manufacturers believ that they should force the
> behavior of a flat screen to mimic the characteristic of a CRT. Thus
> they compel a gamma behavior in the controller instead of the
> "naturally" linear behavior of the panel. If the LUT is deformed
> twice, this could indeed result in banding.
> A hardware calibratable monitor is far more tolerant.
>
> Best regards,
>
> Karl Koch
>
> Am 30.03.2009 um 16:17 schrieb C D Tobie:
>
> >
> > On Mar 30, 2009, at 10:09 AM, Todd Shirley wrote:
> >
> >> What exactly does it mean to "lose 20% of your levels"? Smaller
> >> gamut? Banding? What are the real-world implications of "losing
> >> levels"?
> >
> > Loss of levels on screen, which may be visible as banding or lack of
> > detail on screen. This does not effect the image or the print,
> > except as it may effect your ability to make edits.
> >
> > C. David Tobie
> > Global Product Technology Manager
> > Digital Imaging & Home Theater
> > email@hidden
> >
> > <image003.gif>
> >
> > Datacolor
> > www.datacolor.com/Spyder3
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