I have only done a few mosaics before.
The best one was this one:
http://www.pbase.com/gregbradley/image/98540101
With this one as I recall, I processed each up to being a colour image but no colour processing yet.
I then merged them using Photoshop Photomerge and then once blended I went about the task of evening the backgrounds so the blend lines did not stand out. This took a while.
Once that was done and I had the 4 panel image I did final colour tweakings.
Marc said to normalise the images first. So that would mean getting all the master luminance images of the various panels, and open them in CCDstack or similar and normalising them and saving them. Then repeating that on each RGB master. Then making colour combines out of each panel's LRGB masters. Then blending them in Photoshop or some other program that does a better job of that (Photoshop's merge seems pretty basic no frills).
Is that the best approach?
Does anyone know of a good mosaic stitching program?
I have Panorama factory. I wonder if it also does mosaics?
Greg.