Microsoft on Wednesday launched a new technology and service called Photosynth. The system, currently available to users through a Web site, uses multiple snapshots of a scene to create a seemingly 3-D representation. Careful using it, though — any image “synthed” by users on the site become viewable to anyone. In the works at Microsoft Live Labs since 2006, the technology makes it possible for anyone with a digital camera, PC and a broadband connection to create 3-D scenes from a collection of standard, one-dimensional photographs, according to Microsoft.