FWIW the Autopano-SIFT-C always seems to work - though as far as I can tell it does a poor job of picking "good" CPs, in most cases they all seem to be very close together and often on low-to-zero contrast "features" such as sky, clouds or deep shadow. And of course there are the patent/license issues with it... I've recently upgraded my Mac from 12 to 16 GB, but that hasn't seemed to help. I generally use 16-bit TIFF images 5616x3744 - same as yours (also a Canon 5DmkII?) - but as far as I can tell the determining factor is the number of images that I try to generate CPs for at one time. I just ran a test on a pan that fails when I try to generate CPs for all 15 images at once; but if I select smaller subsets of these I can generate CPs successfully. On Thu, Jun 23, 2011 at 9:19 AM, Rich