--- In Infrared_Photography@yahoogroups.com, D Marcotte <dmarcot@...> wrote:
>
> On Tue, Jul 14, 2009 at 2:13 PM, audiotweak<audiotweak@...> wrote:
> >
> >
> > Have you tried adding a Curves layer then clicking the "Auto" button? I
> > found that took much of the color cast off the IR image and then Auto Color
> > would adjust it more.
>
> No I haven't. I normally convert to B+W and only lately have tried
> false colour IR.
>
> There are many ways to remove a colour cast including plain old Desaturate.
>
> Using ACR to remove the colour cast is easily done. Adobe Bridge
> applies the changes made to one image to all images in the folder.
>
> I keep coming back to where is the starting point for the channel
> swap? It appears that some massaging has to happen up front. Some
> people have been able to use Auto Color, but not me.
>
> A custom WB using a gray card gets me a B+W image. I suppose I can
> play with a number of custom WBs till I get what I want.
> >
> > If you're shooting RAW then create a DNG profile for ACR and that'll get you
> > going quicker and more accuratelyer (I just made that word up).
>
> Accurately is a real word <G>.
>
> Don
> >
> > Mike
> >
> > --- In Infrared_Photography@yahoogroups.com, D Marcotte <dmarcot@> wrote:
> >>
> >> For several years now I have had little luck creating false colour IR
> >> images. A fellow camera club member with an IR modified Nikon D70 is
> >> getting good results using the red-blue channel swap. It have never
> >> worked well for me because the Auto Color function in CS4 and earlier
> >> versions doesn't change colours which become input to the red-blue
> >> channel swap.
> >>
> >> None of the following cameras have delivered good results - D100 with
> >> R72 installed; D200 with clear glass and 88A, 87 and Wratten 70 and
> >> Red 29 filters; 40D with clear glass and the same set of filters; new
> >> XSi with clear glass and most of the same set of filters plus 760nm
> >> and 850nm filters.
> >>
> >> All I get when I do Auto Color is a slight adjustment to the reddish
> >> image. When I do the channel swap, it becomes an intense blue image.
> >>
> >> This is one of the techniques I have tried. It was what my camera club
> >> friend uses. He was a little skeptical so I sent him one of my images
> >> and he became a believer!
> >>
> >> http://www.pbase.com/dlarson2/image/55664676
> >>
> >> I think I have some others stashed away somewhere. I tried the
> >> Kromagery action without any success.
> >>
> >> Any suggestions for editing processes would be appreciated.
> >>
> >> Don
> >>
> >
> >
>
My personal suggestion would be; since you tried auto WB and on a grey card, try
to set a WB on the grass, follow your manual for your specific way to do, it may
bring you back in the expected range. Also keep the setting even if camera is
not givin you the proper light temp, it should bring you close enough.
Personally I never had a lot of success with but a lot of photographer are
promoting it.

Luc.