[argyllcms] Re: Comparing sRGB and AdobeRGB
- From: ternaryd <ternaryd@xxxxxxxxx>
- To: argyllcms@xxxxxxxxxxxxx
- Date: Wed, 17 Feb 2021 11:32:16 +0100
On Wed, 17 Feb 2021 10:49:04 +0100
Hermann-Josef Röser
<posts@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
I think, the behaviour is as decribed by
Graeme Gill. Both the sRGB- and the
AdobeRGB-version of the image are displayed
almost identically for both the sRGB- and
the AdobeRGB-setting of the monitor.
Sorry, I missed the post from Mr. Gill.
What surprised me was the fact that also the
sRGB-rendered image gains in overall quality
if displayed on the AdobeRGB-monitor. That
is the reason why I asked. The answer must be
the conversion of the sRGB-colours to the
AdobeRGB colours when displayed.
You're right; the sRGB should look dull on a
monitor displaying a larger gamut, at least if
you have the visual contrast of other images
also using that gamut. But if the image looks
more "vivid" (higher saturation), there must
have been some stretching in saturation, right?
And that must have some reason.
Maybe, you could create an image with the green
primary (00FF00), assign the sRGB profile (no
transform) and repeating the exercise. If this
colors gets any more saturated on the Adobe
RGB's gamut, it needs to be out-of-gamut in
sRGB, and the stretching has been proven.
Otherwise, the more "vivid" look might just be
some kind of optical illusion.
Also, maybe can you arrange for a second monitor
set to sRGB to come side by side, using a
neutral gray background. This should stop most
optical trickery.
The difference made by the ICC-profile can be
clearly seen when displaying the images with
software, that is not colour managed like
imageJ.
If you've mentioned this before, I also missed
it. Sorry. But the point remains, to find out
where that stretching comes from.
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