This version of Photosynth you're about to use is a technology preview. That's a few steps short of a beta, so it may or may not run on your computer. We thought it important to get it out there early, though, because our roadmap is still wide open, and we know that the best ideas for how this technology might be used may not come from us.

Important: Photosynth makes heavy use of your graphics hardware. If you have an older graphics system, especially an Intel Integrated Graphics one of the 8XX series, Photosynth will not run. Also, Photosynth requires that your graphics acceleration be set to Full.
Our FAQ article explains how to do this.

• Operating System: Only Windows XP SP2 and Windows Vista RC1 or later are supported at this time.                                                                                                             
• Web Browser: IE6, IE7, Firefox 1.5 and Firefox 2.0                                                                                                                                
• Memory: 256 MB of memory is a bare minimum; 1GB recommended.                                   
• Disk: This technology preview uses almost no disk space. The ActiveX control is less than 5MB in size, and no local disk storage is used when the code is running.                            
• Graphics: We have tested Photosynth on graphics cards that are "Vista Aero Ready". This includes: support for DirectX 9 graphics with a WDDM driver, 128 MB of graphics memory (minimum), and 32 bits per pixel. If you want to find out whether your card is suitable, the Vista Upgrade Advisor tool will tell you. Photosynth may run on cards that do not meet this requirement, but performance may be poor and functionality may be impaired.