A smaller but powerful A series flash with dedicated TTL for mirrorless cameras (including Leica M) and photographers on the go! Like travel and street shooters!
Most professional cameras are weather sealed. A matching radiotransmitter would be perfect for all those momens when you have use for the sealing of the camera.
When you need to use direct on-camera-flash in a very dim lighted place and need to use very high ISO and max aperture, like at a reception or a wedding dinner. Then the lowest settings isn't low enough.
Canon has solved this problem with their flasgship flash EL-1.
