RE: Measuring a light box
RE: Measuring a light box
- Subject: RE: Measuring a light box
- From: Roger <email@hidden>
- Date: Thu, 25 Jun 2009 15:37:27 -0400
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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