I just hit the buy it now button on eBay. Got it for a good deal. Allegedly new, sealed at 339.99usd. Amazon and B&H had it for 399.99usd. I know I need a 46 to 52mm step up ring (Would any brand do?) I purchased this because my attempts at macro photography thus far have been disappointing with ambient light. I didn't want to wait around for the Olympus adapter for their ring flash. Besides, the Metz one is supposed to be wireless and can be triggered by the clip-on flash. Can I get advise from anyone who's used it or knows about macro ring flash settings? The best I can come up with was from some guy online who posted on the DP forum and recommended setting shutter speed to 1/160 and aperture to f/16. Can't say I was happy with his results though. Any help would be much appreciated. You may have to explain things simply as I've never ever used a flash (not even the clip-on ones) before. Thanks in advance!