So close! I have been working on bat photography at my water table blind the last few nights. Couldn’t figure out why part of the animal was blurry, it should be tack sharp at 1/16 flash power. It was like the flashes weren’t syncing. Just discovered, I had the flash on the right in high speed sync mode, that would do it! Now I can’t wait to try again. And, to fix up the background edge.