I have a new 430EX III-RT speedlight which works fine on my Canon EOS M50 camera when placed on the hotshoe.
But I cannot get the flash to fire on optical slave mode off camera. I have referred to Page 78 of the flash pdf manual over and over again, but the flash simply won't fire on optical slave mode. I have watched many YouTube videos about this and did many Google searches on this but cannot resolve this issue.
I have the pop-up flash enabled on my Canon M50 camera. When the pop-up flash fires, the 430EX III-RT flash does not fire even when set to optical slave mode.
What am I doing wrong? Or do I have a defective flash? Thanks!