Phase One today upgraded its core medium-format camera body in launching the 645DF. The upgrade to the original 645 incorporates both a traditional leaf shutter as well as a focal plane shutter, the combination of which helps give it unusually flexible flash sync and exposure options. The camera has one of the fastest flash syncs available and can trigger the light at up to a 1/1,600 second shutter speed, and exposure times can be as little as 1/4,000 of a second or as much as a full hour.
