Re: DSLR - background field colour cast...

On 29 Apr 2005 05:52:45 -0700, "justbeats" <steve_beats@xxxxxxxxxxx>
wrote:

>
>My brightfield images always have a pale "salmon coloured" cast to the
>background. I generally run the lamp at around 6-7V, but the issue
>persists at 12V too - so I don't think it can be a colour temperature
>thing(?). Visually, the background looks perfectly white to me.
>
>I'm projecting the image directly onto the 10D's CMOS sensor and
>thought maybe IR was the problem but adding an IR blocking filter just
>before the condenser made no difference!?
>
>Is this just a common issue that's always fixed by later colour and
>white balance tweaks (which seem to work just fine), or am I missing
>something at the capture stage?
>
> Cheers
> Beats
>
>PS. Scope is a Zeiss ICM 405 inverted with an EOS 10D attached to the
>front photoport. Light is 12V/100W halogen.

Check out Extensis Intellihance. This is a plug-in for Photoshop. It
will allow simple or aggressive cast removal.


Gary Gaugler, Ph.D.
Microtechnics, Inc.
Granite Bay, CA 95746
916.791.8191
gary@microtechnics dot com
.