I have one for my 580EXII.


It is good to have for interesting portraits. I hardly ever use it though. Macro guys will go nuts for it.


It makes for an a good fill light. Only problem is the 580EXII's IR signal gets blocked by the arm of this thing and rarely reaches slave flashes. I think white tape on the back side may help, I just haven't tried it yet. Oh and the focus assist beams will always be blocked too.


Since the rings distance from the camera is fixed, you need to use this on longer lenses. I can't use it on my 24 1.4L or my 50 1.4. The lenses are too short and I get bad ghosting and flair.


Oh and it creates some of the worst red-eye you will ever see.


one of the few shots I used it for. I didn't get red-eye here. 24 1.4 L, 400iso, f8.