PhotoStitch can be used to merge multiple images into panoramas. PhotoStitch is available individually for Mac OS X and Mac OS 9.0~9.2. PhotoStitch v3.1 is compatible with Mac OS X 10.3 or newer. Customers who purchased a PowerShot or EOS Digital Camera that was not supplied with a Mac OS X-compatible version of PhotoStitch can purchase the latest Canon Digital Camera Solution Disk or EOS Digital Solution Disk at 1-800-828-4040 for $19.95, subject to availability.