I was shooting this weekend with my nikon d810 on a bright sunny day and I was having trouble communicating with both my flash guns. The speed guns are the nikon sb700 and the mertz.
I had my camera set to commander mode and TTL set for the group.
It seemed that when I got the camera within 10 feet of the flash guns they worked, a step back and I lost one of them, a few feet more and I lost both. A range thing.
Do you suppose this was due to the bright sunlight interfering with the optical triggering?
If so, what will fix this problem. Is it pocket wizard time?