I had a preview of the A1X for Fujifilm a few days ago. I tried it on the 50R. It's an amazingly robust and smooth feeling piece of gear for those who haven't handled it. It also gave really good, "idiot proof" results in TTL mode. The dome diffuser gives really nice soft light.
I like everything about it...except the Profoto tax...
I like everything about it...except the Profoto tax...