Re: Materials for Flat-Fielding
Re: Materials for Flat-Fielding
- Subject: Re: Materials for Flat-Fielding
- From: Charlie Rieger <email@hidden>
- Date: Mon, 04 Jun 2007 15:33:54 -0400
- Thread-topic: Materials for Flat-Fielding
Ken,
I have found that mounting a bright white inkjet paper to gator board works
well for this purpose. The base of the paper is much more uniform and
brighter than foam core, and the gator board gives additional rigidity.
--
Charlie Rieger
Director, Digital Imaging and IT
Rieger Imaging
email@hidden
Voice: 301-869-8300
Fax: 301-869-2786
Toll Free: 800-948-5320
On 6/1/07 2:03 PM, "Fleisher, Ken" <email@hidden> wrote:
> Hello. I have a question about flat-fielding for digital image
> capture.
>
> Currently, we use either white foam core or a white cardboard to
> capture the image for flat-fielding.
>
> I don't like using the foam core because it is too easy to dent and
> scratch and the surface very quickly becomes non-uniform. It also
> seems to hold a strong static charge and picks up dust and dirt very
> easily and is difficult to clean without marring the surface.
>
> The cardboard that we use has too much texture on the surface which
> isn't good for flat-fielding. We counteract this somewhat by settng
> the camera slightly out of focus. We can't seem to find a cardboard
> with a smoother surface.
>
> My question is what material(s) do you recommend/use for this task? We
> would need to ve able to get it in large sizes as well as smaller
> sizes.
>
> Thanks for any suggestions...
>
> --
> Ken Fleisher
>
> Photographer
> Imaging & Visual Services
> National Gallery of Art
> Washington, D.C.
>
> Phone: (202) 712-7471
> email@hidden
>
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