What is the big advantage of in-the-body leaf shutter rangefinders?
Many low cost non-interchangeable lens rangefinders such as the Lynx have a leaf shutter built into their bodies. The advantage of a leaf shutter is simply that you can often flash synch at any shutter speed, from 1 second to 1/500th second (rarely, 1/1000th). By contrast, 35mm SLRs and focal plane shutter rangefinders will usually synchronize with flash at a slower maximum speed, typically from 1/60th to 1/250th second.
