I was unable to find the link you describe in the last week of QT digests. Here is how I adjust the brightness/contrast/color curves of individual images of a pano.
1. Stitch pano in QTVRAS.
2. Look at pict file.
3. Identify exposure variation problems, i.e., banding, color disunity etc.
4. Choose an exposure that is exposed the way you want. This will be the one you start from.
5. In Photoshop, open the exposure you liked best, For example, exposure 6 of a set of 12 exposures, and all the other 11 exposures too.
6. Make exposure 6 the active window. Take the rectangular selection tool and select a slice of exposure 6 that you know also exists in exposure 5, i.e., the overlapping part of the two exposures.
7. Copy the slice from exposure 6. Paste it into exposure 5.
8. Use the move tool to position the slice in its correct position in exposure 5. Go to the "Layers" window and choose "background." Then use the brightness/contrast function and try and make the slice disappear. Sometimes you will also have to use the "Adjust Curves" function in cases when the color balance is off between the two exposures, but most of the time Brightness/Contrast will suffice to get the exposure even between the two images.
9. Save exposure 5. Repeat steps 7 & 8, but this time copy from 5 and paste into 4. Continue repeating until you have made it all the way around. Sometimes you have to work back and forth a bit when you get back to where you started. Sometimes you only have to balance a few exposures until you get to one that is where you want it to be without adjustment.
I have found that as long as the brightness and contrast are within 3-4 units on the 255 unit range of the RGB scale QTVRAS will blend the images without banding.
