[argyllcms] Re: Displaying sRGB graphics on wide gamut monitors - gamma problem?
- From: Anders Torger <torger@xxxxxxxxxxx>
- To: argyllcms@xxxxxxxxxxxxx
- Date: Wed, 27 Oct 2010 14:18:21 +0200
How do you know Photoshop has no problem, have you measured, or is
Photoshop just well known to work well for this? I'm a Linux user so I
unfortunately don't have access to Photoshop.
Anyway, I've made the experiment of displaying a 255 (max saturated) red
green and blue in a sRGB image in Bibble5 with color management enabled
and using spotread to see how it matches the sRGB colorants on my wide
gamut monitor. My thinking is that they should match well. However, they
don't match so well, and these colours are very different if I only
characterize the display (no correction) and thus leave all correction
to Bibble5 or if I actually do calibration (of course feeding Bibble5
with the correct ICC profile). I've only done initial experiments so far
so it is a bit early to say, but it seems like doing the calibration way
lead to colours more close to sRGB colorants. Anyway I thought this
mismatch could be some gamma-related thing...
/Anders
On Wednesday 27 October 2010, Roger Breton wrote:
> It is not a problem for Photoshop.
>
> / Roger
>
> -----Original Message-----
> From: argyllcms-bounce@xxxxxxxxxxxxx
> [mailto:argyllcms-bounce@xxxxxxxxxxxxx] On Behalf Of Anders Torger
> Sent: October-27-10 6:35 AM
> To: argyllcms@xxxxxxxxxxxxx
> Subject: [argyllcms] Displaying sRGB graphics on wide gamut monitors
> - gamma problem?
>
> Is it possible on a wide gamut monitor (colorants near AdobeRGB) to
> display sRGB graphics "correctly"? Say if my low ambient light
> mandates a gamma of 2.4 on the screen to get best sRGB viewing
> conditions and I calibrate my screen to that gamma, will then sRGB
> graphics actually get gamma 2.4? The sRGB white will be the same as
> AdobeRGB white, but saturated colours will not. I'm suspecting that
> due to this there will be some gamma distortion. While grayscale
> will use the full monitor range, saturated colours will not "see"
> the whole monitor's gamma curve, but only up to the sRGB color gamut
> edges.
>
> Is this a real problem, or is it only theoretical? Or perhaps I'm
> wrong alltogether, that there is no gamma distortion? I'm still new
> to this stuff and not 100% sure if my thinking is right...
>
> /Anders
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