Wire, Do you mind posting a scan (photo) of that certificate? Seems every 'high-end' monitors comes with some kind of 'certificate' nowadays. My original Eizo sure came with one such (lost the copy a long time ago). As for the NEC? I don't remember. Probably. 1 billion colors... Best / Roger -----Original Message----- From: colorsync-users <colorsync-users-bounces+graxx=videotron.ca@lists.apple.com> On Behalf Of edmund ronald via colorsync-users Sent: January 4, 2020 5:29 PM To: Wire ~ <wire@lexiphanicism.com> Cc: colorsync-users@lists.apple.com Subject: Re: NEC PA271Q "Native" chromaticities I think the Babelcolor author has a tool to measure uniformity and possibly other display properties. I don’t see any reason to doubt a certificate, there are Photo Research radiometers that can map a whole display in one pass, and the fact that there is a certificate would indicate a measurement is part of the production process. Edmund On Sat, Jan 4, 2020 at 9:13 PM Wire ~ via colorsync-users < colorsync-users@lists.apple.com> wrote:
Forgive me, I was referring to Dell's claims for consistency of this model.
A delta-E being a CIE unit of color difference based on a statistical notion of a discernable color diff. Color guys talk about like audio and RF guys talk about dB, and video guys talk about IRE
This model targets content pros. It's about the "P" in UP2516D.
So my measurements as revealed by DCal made profile is that the Adobe RGB mode hits Dell's target.
And Dell supplies a certificate report for each unit showing it meets their claims. This includes panel uniformity as well as color response.
You guys here rightly asked—in other so many words—Yeah, but does it actually do it?! In context of NEC pro gear that has a rep for getting this stuff right. And at this price point, the query is wise if maybe not fair.
I'm skeptical too...
So living on edge of BS as I do I throwing out there a synopsis that based on what I'm seeing Dell's claim is legit. And I'm hoping for a contrary persoective 'cause it seems too good to be true ;)
Re 1 billion colors: HDMI and DP (I thinj) support 10 bit color data path from graphics to device. 3 x 2^10 is a billion. Not sure what content can use this?
On Sat, Jan 4, 2020 at 11:35 Roger Breton via colorsync-users < colorsync-users@lists.apple.com> wrote:
I mean that in Adobe RBB mode, it's not unreasonable to predict that Dell hits 2 delta-E conformance across the population. IOW, yes consistency across the face of one panel, and conformance of the population to the standard color space.
Here's a screen capture showing the difference between the Dell UP2516 and AdobeRGB:
https://1drv.ms/u/s!AkD78CVR1NBqkoskUPmmGmwKuk7b4Q?e=ldqlgr
It's not bad at all. I don't know if it amounts to 2 DeltaE? But it's possible. Does DispCal (Argyll) have any tools to test this hypothesis?
We are indeed living in a "golden age" of technology.
/ Roger
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