Re: Measuring a light box
Re: Measuring a light box
- Subject: Re: Measuring a light box
- From: "dpascale" <email@hidden>
- Date: Thu, 25 Jun 2009 16:26:19 -0400
Roger,
Small typo; it is BabelColor CT&A which does that.
Danny
----- Original Message -----
From: "Roger" <email@hidden>
To: "'Fleisher, Ken'" <email@hidden>; "'colorsync-users List'"
<email@hidden>
Sent: Thursday, June 25, 2009 3:37 PM
Subject: RE: Measuring a light box
Ken,
BabelColor PatchTool has a test procedure dedicated to test transparency
light booth per the ISO-3664 requirement using a standard EyeOnPro.
Couldn't
be easier.
www.babelcolor.com
Roger
Hello. I am trying to use an i1Pro to measure the light on a GTI light
box
using i1Share software. I can measure the reflective source with no
problem,
but I have a question about measuring the transmissive source. I cannot
find
a way in i1Share to measure luminance (only illuminance). Is there
something
that I am missing? I thought it could make measurements off of a
monitor (in
which case I could trick it into giving me a single measurement instead
of a
series of patches), but it looks like I¹m mistaken about that.
My workaround is to use the diffuser cap and simply hold it right in
front
of the transparency diffuser. Then I take the reported lux and divide
by pi
to get luminance in cd/m^2. I¹m not sure if this is going to give me
the
right measurement. It seems like it might be fairly close though.
Suggestions? Thoughts?
Thanks!
Ken
--
Ken Fleisher
Photographer
Imaging & Visual Services
National Gallery of Art
Washington, D.C.
Phone: (202) 712-7471
email@hidden
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