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Now, suggesting to anyone that they use photography apps to replace a full-blown camera is foolish, but Photosynth offers something else.
Photosynth is the product of some clever work by Microsoft, allowing users of the mobile app to take seamless, 360-degree panoramas anywhere you can whip your phone out. The camera automatically snaps photo after photo as you turn your phone, slowly building a complete panorama; it's great for capturing scenes that no regular photo or video can properly see.
Image credit: Microsoft