The FreeWave Captain Wireless TTL Flash Trigger and Remote TTL Shutter Release System for Canon E-TTL SLRs from Vello is a multi-purpose 2.4 GHz, 4-channel digital E-TTL radio system that gives wireless freedom from a PC cord plus the convenience of accurate exposures through wireless communication with your camera's E-TTL flash technology. Imagine the near impossibility of running 300' lengths of PC cord to shoot outdoors, then imagine the wireless freedom of remote triggered, camera control with auto exposure in a radius up to 300'.

See recent price change history for the Vello FreeWave Captain Wireless TTL Triggering System Kit with Additional Receiver for Canon.