Re: Monitor Uniformity study
Re: Monitor Uniformity study
- Subject: Re: Monitor Uniformity study
- From: edmund ronald via colorsync-users <email@hidden>
- Date: Mon, 10 Feb 2020 11:59:03 +0100
I would guess that viewing angle to the edges impacts perceptive uniformity
of a large display as much as any real local variation.
Edmund
On Sun, Feb 9, 2020 at 6:08 PM Roger Breton via colorsync-users <
email@hidden> wrote:
> After much work and trepidation, I am at the point where I can release the
> findings enclosed in this PDF:
>
> https://1drv.ms/b/s!AkD78CVR1NBqkt8B_bNYu4eo-D74bQ?e=K6gqTQ
>
> My goal was to come up with some kind of useful visualization for a monitor
> Luminance and chromaticity variation, across its surface. I experimented
> with different approaches and I'd be interested in any feedback. I wish I
> had initially measured the three monitors enclosed in this study so that I
> would have some kind of point of comparison - my bad. All I can say is
> that
> I enjoyed these monitors for many years and even though they're "off a
> little", now, they still serve useful purposes. These days, I'm in the
> market for a new LED 32 incher (the new Apple Pro is outside of my range.).
> I've emailed a few monitor manufacturers with regards to the kind of
> warranty they can give in terms of "uniformity" (but not Apple? John, if
> you
> have information you can share, here.). So far, no answer. For a Display to
> have no more than 10% deviation in Luminance or less than 5 dE2000, from
> the
> center of the screen, as ISO 14861:2015 and ISO-13646 call for, given the
> "natural" drifting to be expected with aging of ANY monitors, means pretty
> stringent requirements, initially.
>
> / Roger Breton (from a cold -22C, here, in Montreal.)
>
>
>
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