Stitching & Panoramas are well-covered by Helmut Dersch with his freeware PanoTools (Java,Windose,Mac) at: http://www.fh-furtwangen.de/~dersch/ There are many, many tuts & links to various aspects of imageing & conversions from one focal length to another, rectiliniar to perspective, distortion correcrtions etc. It is a lot of stuff to read through & there is a learning curve to it but well worthwhile. Apple also has some utilities for makeing panos (Windows & Mac) at: http://developer.apple.com/quicktime/quicktimeintro/tools/ Another possibility is that your initial image is rendered too large and resizing down could be a problem. Try to render at the same size the Pano is to be when done.