Do stitching softwares vary in terms of the amount of overlap needed for the two images? I have been scanning some 56 mm wide negatives in two passes where the widest scanning area is 30mm , and stitching them in Photoshop CS3 with Photomerge. It is something of a hit and miss game as to whether Photoshop will merge the files automatically because the overlap is so small so I am wondering if there is something out there that needs less overlap. I know there is some overlap because in every case where Photoshop would not merge the stitches I have been able to do so manually.

Sandy King