Re: Light box screen match
Re: Light box screen match
- Subject: Re: Light box screen match
- From: "Fleisher, Ken" <email@hidden>
- Date: Tue, 19 Jun 2007 14:56:15 -0400
- Thread-topic: Light box screen match
On 6/19/07 2:37 PM, "Steve Upton" <email@hidden> wrote:
> Have you dimmed the computer display at all? or is it operating at its highest
> level?
The monitor's are Eizo CG210 and are calibrated to 120 cd/m^2. I know they
can go a bit higher (I've achieved a max luminance of about 180 cd/m^2), but
Eizo docs state that above 120 the color reproduction isn't guaranteed. Even
so, at 180 I'd still have to lower the light box to about 25% of 1270 (which
is 317.5 and is still greater than the monitor) and at that level, which is
the same setting that I've been talking about, the "transparency" is too
dark.
Stated another way, the concept of dimming the light box is so that you can
match viewing conditions and make a valid comparison. I'm proposing that
this makes no sense because the dimmed light box introduces a viewing
condition that would never be used. Why would I want to generate a screen
match to an image that does not appear correct?
BTW--I don't think it changes the discussion, but I should add that I'm
mostly talking about 8x10 transparencies that are reproductions of art.
> It seems that an image on a display that is quite bright should be bright
> enough for taste &/or printing.
True, unless the reference image that is being matched is not viewed with
the proper viewing conditions. In that case my bright screen will still have
a dark image on it. I don't think the brightness of the screen will really
solve the discrepancy. Even if I had an HDR display as was suggested, this
is not the correct solution either because at some point that image will
need to appear correctly on a regular display and on printed output.
As I said in my first message, I believe the only truly correct solution is
to use a color appearance model to account for the different viewing
conditions. But short of that, I was hoping that others might have dealt
with this somehow using currently available tools without relying totally on
manual editing.
--
Ken Fleisher
Photographer
Imaging & Visual Services
National Gallery of Art
Washington, D.C.
Phone: (202) 712-7471
email@hidden
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