I bought this lens two months ago... low light rendition is fabulous, but I'm a little disappointed by the poor sharpness I obtain, from f1,4 to f5!
Is there anyone who could tell me if my copy really need some kind of fine tuning, by canon service?
Look at this "home session" of shots. I'm not used to try this kind of test and I don't know if the scene and the conditions help somehow.
Thank you!
