Just got this lens today. I had sworn not to buy any non-Zeiss lens from Sony, but I have a macro shoot next week (jewelry) and need 1:1 ratio. Even though the lens seems sharp enough, it is nothing compared to my good old Contax 100 Makro-Planar that I've recently sold. I have to say that I'm not impressed. Can't wait until Sony releases a Zeiss macro.