Noel, I use Photomerge in CS5 (64 Bit) to create panorama images. I noticed a problem in a clear blue sky where I could barley see where the image stitch was located. I could see it easier if I opened curves and moved the left end of the curve to the center which increased contrast. I was able to solve this problem by clicking on the "vignette removal" box in the panorama setup screen. Have you noticed any of these type problems? My flow is a little different. I run Photomerge from Bridge with NEF files selected. I select the nef files in Bridge, then click "Tools > Photoshop >Photomerge". This will give you the Photomerge box in Photoshop. I then select cylindrical, check all three boxes at the bottom, and click OK. Photoshop will then open the NEF files into Photoshop and proceed with the panorama. When the panorama is complete, I click on "merge visible" which removes the thin white lines, use image rotation if necessary, crop, and flatten. With this approach you do not have to save large files of the individual shots.
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