The one I'm looking at has the ability to have either both sides flash, or just the right or left. I have thought about going with a flash gun, and going off the shoe, but I want something that's easy to manage in the field. I think going off shoe would be the best for studio type work, but I think for shooting in the field, the ring flash would work better.I could be completely wrong saying that though. For the sake of $50, I think I'm going to give one a try.