I have to admit, I was a little amused when I saw the PC sync port on the E-M1. I can't remember the last time I've used one of those. Then today 15 minutes into a shoot my transmitter for the wireless remotes died on me. I went to swap the batteries out and realized it was a CR2450, and I didn't have a backup. Just yesterday I picked up a used Alien Bees AB800 from a local shop and there was a pc sync cord in the bag. It saved my bacon today. I have others in "that box", you know the one. The one everyone has buried in the garage under boxes full of other things you'll never look at again but can't bring yourself to part with. I think I'd have canceled the shoot before going through all of that to try to find a pc sync cord.