Hi,

I have a serious problem stitching my 8x10 scans. I currently try with Photomerge (CS5) and Autopano Giga - I mostly need only 2 or 3 images that I want to blend. The problems are:
- File Size and Speed
when I try to blend some 300MPix Scans, I have to wait big time

- The stitching accuracy
This nags me the most - all the tools I tried seem to be optimized for many small Images, not 2 or 3 large ones - I constantly get distorted horizons, stitching errors and bent buildings

What tool do you suggest? If it is one of the above, what can I do to tune the settings? Since there are no Exif Data on scans, what focal length equivalent should I use? The diagonal, the horizontal or the vertical to 35mm?

Any pointers to tutorials would be helpful as well.

Does anyone have successful examples of stitches and can tell how he did it?