RE: NEC PA271Q "Native" chromaticities
RE: NEC PA271Q "Native" chromaticities
- Subject: RE: NEC PA271Q "Native" chromaticities
- From: Roger Breton via colorsync-users <email@hidden>
- Date: Fri, 3 Jan 2020 14:28:47 -0500
Thank you for reporting your experience.
I think we all agree Dom Perignon is "nice to drink" and who wants to cough up
money for nothing? I appreciate learning first hand about your experience,
here. Look, NEC is a nice, established "household" name within color management
circles. So is Eizo. And I can't tell you how I had to break my bank account to
be able to afford an Eizo. Yet, over the years, I was lucky enough to get
exposed to NEC units and learned to appreciate their value for the (less)
money, compared with the other brand. From the looks of things, it seems that
the newest generations of panels are becoming better, in gamut, controls,
electronics and, hopefully, in terms of uniformity. I mean, we are slowly going
towards Rec2020 in televisionland, so that is bound to trickle in computer
monitorland as well, one of these days, and let's not forget we're in 2020,
now. So, lots of interesting things are happening on the technology front.
WideGamut displays are coming down in prices and it is a matter of time before
monitor manufacturers are able to implement better screen uniformity through
cheap electronics. Think the $600 you've paid for your Dell UP2516 today will
buy you next year?
/ Roger
-----Original Message-----
From: colorsync-users
<colorsync-users-bounces+graxx=email@hidden> On Behalf Of Wire
~ via colorsync-users
Sent: January 3, 2020 2:16 PM
To: email@hidden
Subject: Re: NEC PA271Q "Native" chromaticities
Well, I agree, how can you trust anything?! :0 I get frustrated because color
management seems to be a circular chase sometimes, even though I know it's not.
More seriously, I find my ability to perceive color fatigues when I grade
images for long periods. I also see that sometimes I am much more-or-less
sensitive to saturation when environment is otherwise constant. So I find am a
huge variable in my color experience :)
Every review / test of desktop IPS display I have seen, and I've prolly read
100 or more over the years, reports uniformity error as non-zero. It's the
nature of the tech. And how much I notice or care is highly subjective.
I prefer it to be zero, but these are just god-given parameters of the
situation. Yes, higher fidelity is cool. It looks amazing to see pictures in
great color. I say YES to quality.
I c o n c u r that having a pair of displays side-by-side, can create an
irritating difference when drift is as small as 1 dE, although—again—how much
it matters in general imaging practice is even more subjective that our visual
systems.
"So what does it all mean, Basil?"
If money were no object, I would still consider this unit. Actually, even being
partly blind, were I to spend more, I would prefer higher resolution, over
further improved color based on much I like this units performance.
Also, I was reluctant to acquire this model because I saw user reviews
complaining about uniformity. This one is completely acceptable to me.
Now, I ordered two, but one was damaged by FedEx. The replacement arrives
today, So I will get to see if it's a one-off in a bad lot or not a problem.
The units these are replacing are also Dells, 2009UWs, IPS, low-res, bought
based on price/performance in 2010. These also had some panel left/right
variation which was acceptable. With those, I cleverly solved the problem of a
slight mismatch by setting the sides that touch to match. And while I would
prefer there was no variation to account, it has never affected my professional
work in any way. I truly enjoy quality, and what I am seeing from Dell looks
very good. Those 2009UWs turned out to measure as perfect sRGB, and once
calibrated, had smooth neutral response. They've served me well for a decade.
Though as they are aging, the backlight of one has developed some minor
botches. NEC was making top-flight gear back then too—and 20 years before with
CRTs (Who remembers the famous "Multisync")—for about $1500/unit, while these
Dell 2009UWs got to 98 percent of the performance of an NEC for 1/5 of the
prices. You see how I think.
So, if the second UP2516D that arrives today performs about as well as this
one, I will have 2 great functioning wide-gamut displays, I will order an
i1d3 to replace my DTP94, and drink a bottle of Dom Perignon with a filet
mignon for dinner, and still have money left in my pocket as compared to buying
an NEC!
I bring all this up just to share my experience—maybe it will help someone
else, and because it's interesting to color nerds, so pls enjoy.
I will do a crude uniformity measurement with the Uniformity Compensator
feature turned on and report what I find for the pair of units.
Best to you all.
On Fri, Jan 3, 2020 at 10:08 AM Roger Breton via colorsync-users <
email@hidden> wrote:
> Sorry for the typo, I meant PA271Q -- not "W".
> Uniformity is very important, as Andrew aptly noted.
> I remember getting bitten by relatively poor screen uniformity,
> comparing images to one another; how could one compare the differences
> in the "images themselves" when the screen "colors" drifts from one side to
> the other?
>
> / Roger
>
> -----Original Message-----
> From: colorsync-users
> <colorsync-users-bounces+graxx=email@hidden> On Behalf
> Of Roger Breton via colorsync-users
> Sent: January 3, 2020 12:21 PM
> To: ''colorsync-users?lists.apple.com' List'
> <email@hidden>
> Subject: RE: NEC PA271Q "Native" chromaticities
>
> It's almost on the nose of the NEC PA271W chromaticities, practically
> the same 'gamut'.
> For a whole let less money. But what about the 'uniformity'? Can't say
> how comparable it is, for I don't have a PA271W but that's an
> important quality.
>
> / Roger
>
> -----Original Message-----
> From: colorsync-users
> <colorsync-users-bounces+graxx=email@hidden> On Behalf
> Of Wire ~ via colorsync-users
> Sent: January 3, 2020 12:12 PM
> To: email@hidden
> Subject: Re: NEC PA271Q "Native" chromaticities
>
> On Fri, Jan 3, 2020 at 7:54 AM <email@hidden> wrote:
>
> > Are you able to post the measured RGB chromaticities?
> > / Roger
>
>
> Dell UP2516D primaries as measured using DisplayCal / Monaco Optix
> DTP94
>
> I haven't sanity-checked these numbers, so if something looks weird
> please say so...
>
> Display in native mode:
> Chromaticity (illuminant-relative)
> Channel 1 (R) xy 0.6829 0.3123
> Channel 2 (G) xy 0.2256 0.7248
> Channel 3 (B) xy 0.1515 0.0486
>
> Display in Adobe RGB preset mode:
> Channel 1 (R) xy 0.6441 0.3301
> Channel 2 (G) xy 0.2278 0.7157
> Channel 3 (B) xy 0.1515 0.0562
>
> /wire
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