Wireless TTL, ETTL, ETTLII & Manual group control - These little gems arrived today and for £33 a piece, I’m massively impressed, full off camera flash control from inside the camera, no need to buy a master flash this will operate as a master but also allow an on camera flash to be mounted on top if so desired. Supporting TTL ratio’s from 8:1 to 1:8 plus full manual control of exposure, bracketing, strobe frequency, and flash head zoom compatible with a wide range of TTL speedlights, I can’t wait to get some more TTL flashes and benefit from full remote control on a 3-point lighting setup. With a 1 year warranty you really can’t go wrong with these yn622c wireless transceivers. PS Both Canon and Nikon models are available for the same price too.