I bought two flash YN720 with the understanding that I didn't need a trigger to fire both master and slave flashes. Not sure how to set them up? I have two RF 630N triggers but I would rather not use them. Is it possible?
This is the blurb from manufacturer: 'Built into it is a 2.4 GHz wireless transceiver, allowing it to be fired remotely at distances of up to 328' or used as a master to directly control the mode and output of compatible flashes. Additionally, it can also be used as an optical slave for multi-flash setups without radio transmission. '