Right before my trip down to see U2 at Gillette Stadium in Foxborough, I stumbled on the AutoStitch app for creating panoramas. Right off the top, let me say it is worth the $1.99.
As of this writing, I've only created two images with it, the top from the aforementioned U2 show, and the bottom from the Bruins opening night at TD Garden:
Click on each of the images to get a fuller view over on my Flickr site.
AutoStitch is dead simple to use and makes creating panoramas easy. Take multiple pictures with the iPhone's regular camera app, open AutoStitch, select the photos and bang, you have a panorama.
AutoStitch's maker recommends roughly a 30% overlap between each image, but this is not a hard and fast rule. I took mine in dark situations to getting the perfect overlap was not easy. Didn't matter, AutoStitch did the job. The only clean up I did was to crop the edges of the image since AutoStitch didn't create a perfect rectangle.
If you take lots of pictures with your iPhone, AutoStitch is a must-have application.