re: Why D65 on monitors and D50 on lightbox?
re: Why D65 on monitors and D50 on lightbox?
- Subject: re: Why D65 on monitors and D50 on lightbox?
- From: Dan Reid <email@hidden>
- Date: Thu, 06 Dec 2001 15:40:27 -0700
Hi Folks,
Guess y'all missed Don H. and my presentation at the GATF conference
earlier this week about this topic. PDF version of the presentation will be
available soon on the GATF site. Email me offline if you want a copy sent
directly.
In a nut shell here is the problem. 1) You can't calibrate your monitor to
*spectrally* respond to D50. You can get you monitor to 5000K but not D50.
There is a huge difference between these two specifications 2) Most, if not
all, of the time you are not under D50 lighting! Even fancy light boxes do
not exhibit D50 spectral response no mater what they do in filtering the
light source. 3) Printer profile color matching is based on reference white
point of D50. So profiles are created assuming you will be under D50
lighting which is almost never the case.
The solution: Calibrate you monitor's white point visually to match the
perceived white point of the paper stock under the light booth. People have
found 6500k to match a little closer but that's just preference and not a
rule. Maximize your monitor luminance level so less compensation needed at
the light booth in matching perceived intensities between the devices.
That's quick and dirty Cliff notes on the presentation.
--
Dan B. Reid
RENAISSANCE PHOTOGRAPHIC IMAGING
Color Imaging Solutions Provider
http://www.rpimaging.com | email@hidden
Toll Free: (866) RGB-CMYK [ 866-742-2695 ]
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