I'm curious if anyone has worked with any fairly large (i.e., 12" diameter or greater) ringlights and, if so, who made them... I haven't found many available, and what I have found (e.g., KinoFlo Kamio) tends to be fairly dim. I'm a bit surprised, frankly, that Kino didn't build the Kamio to hold more than one tube, just to boost the light output.

litepanel makes a very large ring light,LED. I believe you have to run it on a/c ?? the Kamio can run dc.