Fast and acurate
After dropping in 5 36 Megapixel photos it only took the app 30 seconds to produce a very large pano. Tried both spherical and cylindrical warping and could see no difference between outputs. My camera+lens (Sony A7R and 35mm Zeiss 2.8 lens) generates a bit of vigneting which will be slightly visible in the output near the merge lines. If you get rid of vigneting before stitching you get a much better result.
I think this is the best stitching app in the Mac app store so far!
ds3d about
PhotoStitcher, v1.5.1