Re: Colormatch vs Adobe 98
Re: Colormatch vs Adobe 98
- Subject: Re: Colormatch vs Adobe 98
- From: DScharf <email@hidden>
- Date: Fri, 01 Feb 2002 05:53:58 -0800
- Organization: David Scharf Photography
It seems to me that using high brightness value for a monitor setting is
good and appropriate for obtaining maximum dynamic range from the
display. A good thing to do when your final output is a transparency.
However the recommended brightness used in calibrating monitors in most
of the software packages that I have used (ICC Display, Optical, Barco's
Calibrator Talk) seems too bright if the final output I am trying to
match is a print (specifically ink-jet print here). Shouldn't the
displays be calibrated to the same brightness as the conditions under
which the print will be examined (not necessarily the final display
conditions)? After all, the point is to be able to match the monitor to
the final output.
As far as the previously posted comment by Don Hutchison about ICC
Display being the "best" monitor calibration software, I agree that it
is very good (I was a beta tester for the program), but the results you
get will depend upon the measuring hardware that is used with it (I use
a Spectrocam with good results).
David Scharf
--
DAVID SCHARF PHOTOGRAPHY
Scanning Electron Microscopy
Phone 323-666-8657
Los Angeles, CA 90039
http://www.microscopy-today.com/Scharf.html
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While most of the discussion is centering about D50 vs D65, brightness
is
not being mentioned, and I believe that to be
an important factor.
Our perception of saturation and hue changes
with brightness; a monitor
(CRT) calibrated to D50 at 70cd/m2 will very
likely seem too red, while
another calibrated to D50 at 100cd/m2 will
seem perfectly "white".
I remember seing a draft of ISO reference
conditions for softproofing, and
the recommended brightness was I believe
100cd/m2 with a minimum of 90.
I bet 8 out of 10 (or more!) of our dear
listmembers can't reach 90cd/m2 at
D50 on their CRT monitors.
So what do you do now? Calibrate at D65, so
you see it whiter, and also will
help you reach maybe 85cd/m2 or so.
In imprecise and probably wrong terms, I
would say in a CRT the cast of D65
at 75-80 cd/m2 is visually equivalent to the
cast of D50 at 100cd/m2.
Now if you want to throw viewing booths into
the equation ...
-- Roberto Michelena
EOS S.A.
Lima, Peru
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