Using green screen technology similar to that in film production, Photo Booth can insert the background without affecting the subject at all. Special effects are also the other way around. Photo Booth can execute these complex technologies in real time, and get the best performance with the help of GPU and CPU in the computer. Leopard uses the same technology to apply special effects to iChat video chat.

What makes Photo Booth so interesting? Special effects, of course! Leopard added more special effects to Photo Booth. Pick a special effect you like, then click it, and then the screen will gradually turn white and can be used as a flash. (This is the cleverness of Photo Booth. ) Then you will get a high-quality photo, which you can save as an iChat friend image, send to your friends by email or put into the iPhoto library. The photo booth is only open to the subject, so you can use special effects.