"A quick way to recognize the M6 TTL from the M6 classic is the MUCH larger shutter speed dial. In practical terms the new larger shutter speed dial is easier and faster to change speeds. This allows the TTL shutter dial movement to correspond to direction of the plus or minus finder LEDs, which in turn correspond to the direction of the lens f/stops. Unfortunately the TTL shutter speed dial rotates in the opposite direction of earlier M's, which many experienced M users find quite distracting. This backward in traditional terms shutter speed dial rotation was continued with the M7, but dropped in the traditional and very popular MP 2000, thus creating the orphan status. The "wrong way" shutter dial makes the M6TTL the best manual M to complement the "wrong way" M7 -- or the M7 the best AE camera to complement the M6 TTL."