[argyllcms] Re: Direct matching between two displays
- From: Roger Breton <graxx@xxxxxxxxxxxx>
- To: argyllcms@xxxxxxxxxxxxx
- Date: Sun, 12 Feb 2012 09:28:22 -0500
It is a challenge to make two monitors match each other, visually, even if
they both report the exact same chromaticities.
There are many factors influencing the final result over and beyond measured
chromaticities.
The type of instrument is probably the biggest factor.
I always thought that only a spectroradiometer would be capable of yielding
the best physical match. But even there, I'm not convinced that it would
indeed be perfect. It might be very good to me? It might be perfect for me,
or acceptable to me but not acceptable to you or not very good according to
somebody else?
Ideally, it would help if both monitors were of the same make and model, and
are judge by one person.
Ideally, instead of using the 1931 Standard Observer color matching
functions, we would be using YOUR very own carefully measured color matching
functions. Then we would be in the best possible position for both monitors
to match visually FOR YOU, provided they have been spectroradiometrically
measured.
But you have to keep in mind that the 1931 Standard Observer provide an
AVERAGE match.
Best / Roger
From: argyllcms-bounce@xxxxxxxxxxxxx [mailto:argyllcms-bounce@xxxxxxxxxxxxx]
On Behalf Of Ivan Tsyba
Sent: February-12-12 7:40 AM
To: argyllcms@xxxxxxxxxxxxx
Subject: [argyllcms] Direct matching between two displays
Hi list.
I try to calibrate two displays to the same state: set identical white point
chromaticities, brightness of white and black points, make both absolute (or
this was wrong?) 2.2 gamma. Then I try to open two copies of the same image
on both displays in Photoshop CS5 and I can easily see differences between
images, especially in neutral areas: one image greener. Photoshop uses both
display profiles, I see it when image dragged on another display.
On one display I set white point using OSD controls, and before calibration
started, gray desktops backgrounds is almost identical, but after
calibration this monitor became noticeable greener, especially in dark
areas.
Both displays are cheap LCD and I'm using Colormunki Create and latest
dispcalGUI.
Any suggestions?
Other related posts:
