Hello there, My wife is a dentist (orthodontist actually) and she needs a macro lens between 50mm and 100mm. I had a look at the lens "Olympus M.Zuiko Digital ED 60 mm / F 2,8" but I read somewhere it's actually a 120mm instead of 60mm. I guess it's duplicated due to any photographic concept I don't know. What macro lens could you recommend in that range? (between 50mm and 100mm). The cheaper the better Thank you for your help!