I did a little stitching with Canon PhotoStitch, and it works pretty well. Yet in the case of the FIRST sunset photo below there are annoying shades added at the stiching points. The pro's are that I got the program along with a camera (it's free!), and it is very fast and easy to use. But could I use a better software (Windows Vista/64bit - Nikon D40)?
According to the very wise Ken Rockwell, I couldn't!
The SECOND sunset photo below I did with Microsoft ICE, and maybe that is the answer to my dreams? No! I notice that the chimneys to the left and to the right now no longer are straight up!
In the THIRD sunset photo I used the appropriate "Rotation Motion" setting in ICE (in stead of "Planar Motion 3"). Now the chimneys are upright, but - alas - in spite of using the same 100% JPEG quality, the photo is now a bit more blurred (look at the lights in the windows). Also, I notice a convex change to the horizon.
There is a little discussion at Flickr. As I am not into sewing my pictures "by hand", it seems Hugin could be the answer for me. Would you agree on that? Will the "authorized" 32-bit ready compiled version work with my 64-bit Windows Vista? As you probably know Hugin is a GUI for 'Panorama Tools'. And it's free as against PTGui. (PTGui Pro is a real 64 bit program. And expensive!) - There are plenty of Hugin example photos at Flickr.
Regards
P.S. I'm aware that my originals for the sunset photo aren't very sharp. But for testing they work well.