NEC 2690WUXi - can it handle regular sRGB?

Started Oct 1, 2007 | Discussions thread
Mark H
Mark H Veteran Member • Posts: 3,756
Clarification, corrections, and advice...

Tom_Bruno wrote:

Mark H wrote:

Note: The one situation where the NEC monitor (and others with the
same function) actually does do colour translation - is of course,
when you switch into the special "sRGB" mode.

In this special case, the monitor receives what should be "sRGB
colour data", and then translates it into the panel's "native
wide-gamut" colour space, so that it displays it correctly.

But “correctly” in that case would mean correct for the OS and
programs to which NEC originally created the internal sRGB, not
necessarily any one user’s setup.

No, not at all.

The "sRGB" mode is totally independent of any OS or program - it simply makes the monitor behave just as if it were a regular commonplace sRGB display.

So using the preset sRGB can
result in oversaturated images on the display, as was reported by the
people on those threads I mentioned earlier, and here on DPR.

It's difficult to see why images would look oversaturated on the "sRGB mode" - it should be more likely to see either normal or undersaturated.

....And this is why you should need to switch between different ICM
profiles in Windows/App's, when switching between the NEC 2690's
"wide/native gamut" and "sRGB" modes, when using "fully
colour-managed app's" - to the application/PC system, it's like you
are effectively switching between different monitors (although
actually just gamut/profile is changing).

If I read you correctly, that means I can/should profile the 2690, if
I get one, in two ways: 1) For wide gamut, to use Photoshop, and 2)
For standard gamut, or sRGB, to use the internet, Power Point etc.

If NEC have done a reasonably good job of the "sRGB mode" then you may not need to profile it - but there's certainly little to lose if you do.

You may know that this particular NEC cannot hold an internal calibration for its sRGB mode, so such a profile has to be done the usual way using graphics card LUT loading.

This may cause a further problem - because if you want to switch between monitor gamut modes, you would not only need to switch the ICM profile on the PC to keep your fully colour-managed app's like Photoshop happy (to enable them to determine the colour gamut in use), but you would also need to clear out/load back in any gamma correction LUT loaded into the graphics card from the sRGB profiling/calibration.

Loading gama correction LUTs conventionaly only occurs on OS startup - but you can manually run the gamma loader from the short-cut in the startup folder (after switching the Windows Default ICM profile).

And if I’m getting this right, you’re saying that I can switch
profiles back and forth as needed to accommodate different tasks.

Well, yes, but...

And that seems to say that profiling the monitor for sRGB and using
that profile is replacing the need for switching the 2690’s internal
mode to sRGB. Also that since creating an sRGB profile involves
calibrating the monitor to my own system, it will be more accurate
for displaying sRGB on my own system than the 2690’s preset sRGB.

Not quite right I'm afraid - you always have to switch the monitor mode (at the very least).

To switch between the two gamut modes - you'd ideally want to both switch the mode on the monitor AND correspondingly change the ICM file in use on the PC OS, - AND then reload the graphics card LUT.

Bottom line, if the above is correct, it means that using the two
profiles would allow the 2690 to display either sRGB or aRGB, but not
at the same time. And the sRGB profile would be pretty close to
accurate.

To risk repeating myself, are the creation and use of profiles, as
above, a “fix” for this over saturation? By calibrating the 2690 to
one’s own system, will it render sRGB images correctly, or “pretty
close?”

The calibrations merely help with accuracy in their respective modes - but it's having the appropriate colour profile in place whilst using the respective mode that is the key thing - but the profiles only matter when using fully colour-managed applications like Photoshop.

When using non-colour managed app's you can either switch to the NEC's sRGB mode, or put up with oversaturated colour in the NEC's native wide-gamut mode. N.B. Changing the ICM profile (on the OS/PC) has no affect in non-colour managed applications (because, by definition, these app's don't take any notice of the profiles).

Finally, I’d like to get back to the basic point. I want a very good
monitor for photo editing. I also need to use it for general work.
I’m willing to adapt by making profiles, and switching them as needed.

From the recent discussion, it seems like the 2690 could function in
this way, for both editing and net viewing – assuming the user sets
and changes profiles for the different tasks.

It could - but - I think it's clear from many peoples' confusion, and the complications/hassle involved - I personaly think that most people would be generally better off all round NOT buying these wide-gamut displays.

The current benefit's of using wide-gamut displays probably do not justify the effort and the complications involved - for the majority.

I would personaly recommend most people to just get a top notch "regular sRGB" display - which not only would be every bit as good for most people, but also less complicated to deal with, less technical issues, and also would very likely be considerably less costly.

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