I needed this adapter to my Canon MR-14 to be mounted on my Macro lens. However, I really spent the money for lack of an alternative only grudgingly, because the price is mE an absolute impudence. It is actually just a piece of metal with a thread and a groove for the brackets of the MR-14 Macro flash. It fits, works as intended - but the price makes me despair and therefore for there clear two star deduction.