So I just bought the 600ex flash to use with my 5D3.
On assignment for the week...works like a charm.
Then in the middle of a shoot...it stops working in E-TTL mode..and only shows TTL
No way to get it to back...pressed clear...removed batteries...will on do TTL
Call Canon CPS...we go thru the drill but nothing helps...they suggest I return it.
I bring it back to B&H...give me a new one...no questions asked.
put some batteries in...works just fine.
This time...within an hour of using it on the job...same thing...switches from E-TTL to TTL
Call Canon CPS...no suggestions.
Anyone else have this happen. And if you have...did you find a fix?
BTW..I was using the original canon off camera flash cord both times it stopped working...but used the 1st flash for 2 jobs with the off camera flash cord without problem.
5D3, 6D, 15 Fisheye, 17-35 2.8, 50 1.8, 28-70 2.8, 24-105 4, 70-200 2.8 is, 100 macro, 1.4 ext, 2 600 flashes, einstein & dynalites