After I had the problem with my cheap Manfrotto ring flash that it was useful to the earlier Sony Alpha A100 and A700, but constantly underexposures produced off the A55 and A77, which could not be reliably avoided by many corrective attempts I have This ring light ordered that has the great advantage of no electrical contact to a camera to benötigen- so it will work with all my cameras. The supplied adapter rings (6 pieces for 49/52/55/58/62/67 mm) cover well from all the required thread diameter. You can adjust the light output by turning on or both of the inner or the outer LED ring together. The part is in any case so much light that good speed / aperture combinations come about at 100-200 ASA, and in contrast to a flash, the effect of the lighting can already judge before recording. All in all: a highly recommended tool for macro photography. Instead of the supplied AA batteries (4 pieces Duracell Procell) can be very good by batteries (eg eneloop) use.
However, the product is not the least bit user manual to describe eg how the battery compartment is opened and what the three switch positions mean on the ring light itself (labeled F, O and I). Okay, you can come out. I type in "Full", "Outer" and "Inner"). Since the provider could make improvements. But this criticism should not lead to the devaluation.
