RE: Two monitors, side by side
RE: Two monitors, side by side
- Subject: RE: Two monitors, side by side
- From: Wayne Bretl via colorsync-users <email@hidden>
- Date: Wed, 5 Feb 2020 11:55:28 -0700
Charles J. Hirsch of RCA, in November 1964, published a paper in the IEEE
Transactions on Broadcast and Television Receivers,
"A study of the need for color controls on color TV receivers in a color TV
system operating perfectly."
In this paper he analyzed the effects of differences in spectral response
among individual observers with normal color discrimination, as recorded by
Gibson and Tyndall in 1923-24. Hirsch's conclusion was that with NTSC
primaries (similar to Adobe RGB), adjustments of +/- 20% or more in the
proportions of a mixture might be required to nullify the extremes of
observer differences.
In other words, do not expect that you are a match to the standard observer,
and expect to see some difference between displays that have different
spectra.
I, too, have two disparate monitors, and they do not match exactly to my eye
when the i1pro says they should. I use the larger, wider gamut one for
judging images and the smaller one for menus.
I also note that the mismatch when first turned on is much greater than
after 30 minutes of warmup. I suspect this is due to change in the color of
the fluorescent backlight as the internal pressure stabilizes.
-----Original Message-----
From: colorsync-users
<colorsync-users-bounces+waynebretl=email@hidden> On Behalf Of
Roger Breton via colorsync-users
Sent: Wednesday, February 05, 2020 10:21 AM
To: email@hidden
Subject: Two monitors, side by side
I managed to pull my old CG-21 of the moth balls, to serve as a second
display - how could have I ever lived without this convenience? Crazy.
Of course, first thing I did was to try to make it "look" like my NEC
PA271W. They're both LCD monitors yet, at the same chromaticity and
Luminance, they don't look the "same". One is "reddish" (CG-21) while the
other (NEC) is "greenish".
Any suggestions?
/ Roger
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