I bought a cheap Gloxy 990 flash. I'm using it with a Nikon D7100 and a Nikon SB600, hence the need for a little more power. I understand I can use it as a slave, but I'd like to use the Yongnuo 622 ...
I need to simultaneously trigger / shutter release cameras for 15-20 iOS devices. Need a WiFi based solution since bluetooth based one cannot handle so many devices. Software may run on a PC or a ...