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MikeMikeM
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UP2516D, uniformity, discussion


@DELL-Chris M wrote:

 

* Turn the room lights on. Dell monitors are not validated in a dark room. All monitors are inspected per industry standard, which is with 150lux ambient lighting (similar to typical office lighting)
* Post pictures of the standalone BID (Built-in Diagnostics), page 56, and I will tell you if it meets our manufacturer specifications for overall uniformity


Chris,

For relative perspective, this Wikipedia chart says typical home living room lighting is 50 lux.

https://en.wikipedia.org/wiki/Lux

The nVidia GeForce Forum website has black background with low-intensity green and grey text.  That site undoubtedly attracts a high concentration of discriminating graphics professionals and enthusiasts.  I think you'll agree, that dark low-contrast site is designed to be best viewed in a low ambient environment.  A dark room.

https://forums.geforce.com/


Are the "manufacturer specifications" you mention available to the public?  They would be a helpful resource for customers to decide which Dell monitor would best suit their viewing requirements.

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6 Replies
MikeMikeM
1 Nickel

Re: UP2516D, uniformity, discussion

229899-Lawrence-Livermore-National-Lab-case-study-1260x709.jpg
(from https://www.amd.com/en)


Here's a real-world example of a reduced-light computing environment.

Notice how the monitor is casting a shadow of that one fellow onto the wall.

Maybe that shadow actually came from the camera lighting.
Imagine how much dimmer the room actually is, minus that camera lighting.


No IPS glow from those black corners.
They probably spent a few dollars more on their monitor than I would be willing to.  chuckle.
Lawrence Livermore National Laboratory.
But still.  The point is, low ambient environment.  Dark room.

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Moderator
Moderator

Re: UP2516D, uniformity, discussion

this Wikipedia chart says typical home living room lighting is 50 lux.
* That is not Dell policy which is what we must follow.

Are the "manufacturer specifications" you mention available to the public? They would be a helpful resource for customers to decide which Dell monitor would best suit their viewing requirements.
* No.

* Go back to the top of this Monitor Forum
* Open, "FAQ Monitor (updated 3/18/19)"
* Open, "Backlight or Color/Tint Uniformity policy"

 

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yumichan
3 Zinc

Re: UP2516D, uniformity, discussion

If you own a widegamut like UP2516D you should own an i1DisplayPro, otherwise your monitor is an useless tool. <= THIS IS IMPORTANT Since i1DisplayPro is a HID device it doe not need special drivers to use it, it's like a mouse/keyboard. Download & install ArgyllCMS/DisplayCAL. Run DisplayCAL once with your i1d3 plugged in. It will ask for ArgyllCMS location, give it the path to ArgyllCMS' "bin" folder, or use the auto donload option. With all this stuff installed run an "Uniformity report" (5x5 measurements across the screen), it will save report in an HTML file. Default verification is dE00 uniformity against ISO rules (I do not remember the exact ISO rule, google). It is very very very unlikey that low cost monitor like these dells or benqs, or lg or asus are going to get a "PASS" in this test.... but it does not mean that you cannot use them if your monitor meets a more relaxed criteria. So change verification in report from "ISO XXX dE00" to "DeltaC". More than 3dC in a cell (with exception of the 4 cells in corners) means not worthly. Return for refund and try again with another unit. All of them should be under 2dC for color tints... but let's use the less than 3dC relaxed approach. If all this "return for refund and try again" is not acceptable, get an Eizo CS or a NEC PA.
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yumichan
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Re: UP2516D, uniformity, discussion

I do not know what happened but my message lost all line breaks. Is there some incompatibility with Firefox and javascript used in Dell forums?

I use Chrome for the Lithium Forum. But all of my composing is done via Notepad, then copied into the Chrome browser. Are you composing within Firefox? If yes, test Chrome and Edge to see if the same line break issue shows for you.
DELL-Chris M

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MikeMikeM
1 Nickel

Re: UP2516D, uniformity, discussion

Thanks for the info.

About this forum editor.  I just tested pasting plaintext and also html markup from the FF clipboard buffer.  It seems this forum editor automatically parses the html markup, and rejects it if it contains any styled blocks.  (it gives a red message saying invalid html).  But either way, I wasn't able to repro it stripping newlines from FF.  (CRLF or <br> respectively).  I'm going to guess maybe your reply was pasted with "<" and ">" in an arbitrary non-html aware way, that might have tricked up this forum's parser.  Did you type it in, or paste it from an external editor?  I didn't try to goof up the parser with invalid html.

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MikeMikeM
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Re: UP2516D, uniformity, discussion


@yumichan wrote:

I do not know what happened but my message lost all line breaks. Is there some incompatibility with Firefox and javascript used in Dell forums?

I use Chrome for the Lithium Forum. But all of my composing is done via Notepad, then copied into the Chrome browser. Are you composing within Firefox? If yes, test Chrome and Edge to see if the same line break issue shows for you.
DELL-Chris M


Ah.  Now I remember where I've seen it happen.  In MSDN (microsoft dev forum) when the censor-robot deletes something profane or even unflattering or critical.  When their robot does that, all formatting including newlines gets stripped from the post.

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