[Incompatible]

Came in and I've had a chance to shoot a few pics with it. My thoughts:
For the money, a good low cost option but limited to close distance work. Somewhat cheap/fragile, but functional. Hopefully you're not banging your lens and camera around so not a serious concern. Comes with a full set of adapter rings with the kit which are unique to this light. I haven't had a problem with the light rotating on the ring, but should this be an issue, a small wedge of paper will lock it in place. Being a constant on light source, it does help with focusing. Thanks to all for their input.