Re: Color Accurate Camera Work
Re: Color Accurate Camera Work
- Subject: Re: Color Accurate Camera Work
- From: email@hidden (Lee Blevins)
- Date: Tue, 15 May 2001 06:59:07 -0400
- Organization: Digital Graphics, Inc.
My company specializes in making copy chromes of artwork. We were forced
into doing it because when we send paintings out to be copied (for
giclees) the results were horrible.
We leave the painting hanging in front of the camera and have the chrome
processed. If it doesn't match, we shoot again.
Our goal is to put the chrome on the scanner and have a balanced
highlight on step one of a gray scale.
The problem with hue has to be color corrected. It is impossible to know
how the pigments will react to light. Even though we can put a Q60 in
front of the camera and shoot it, it's only relative for color prints
since the paintings hues are made from pigment, not photographic dyes.
I often joke about having an artist paint a Q60 with the paints they
used in the painting.
Most labs that did copy chromes for us thought like photographers and
produced a much to saturated transparency.
Our own experiments found that we had to cut the ISO of the film in half
and use direct lighting. If the transparency is too saturated, the
correction by adjusting the resulting gradation in photoshop made for
too contrasty a reproduction.
Photography and transparencies are capable of recording a much greater
brightness range than print can. It's best if you start with chrome that
has a reduced brightness range than trying to compress a traditional
shot.
snip
>
Information on finding a way to have artwork either shot to transparency so
>
that the transparency matches the original, OR finding a company that can do
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color accurate digital photography of artboards.
>
>
This does not seem to be rocket-science to me, given that it is digital
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photography in a fixed lighting setting, but the vendors I am aware seem to
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be ignorant of these things.
>
>
Thanks,
>
>
Abe Hayhurst
>
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