Yongnuo Yn560 Iii

This is the upgrade of YN-560II flash speedlite.And YN560III equal a YN560II plus a RF603 or RF602 single receiver. Basic Functions and Features 1. New Power zoom function: You can push the button on the flash and make it covered focal length range from 24mm to 105mm. 2. Guide number: 58 at ISO100, 105MM. 3. Slave function ( S1, S2,RX mode): You just can use YN-460 and YN-460 II in indoor and at a very weak light, but for YN-560 III, you can use it in outdoor environment, and the wireless triggering distance is as around 15m.