it just doesn't seem to give me the sharp images I had thought it would. Example: I took some pictures of my daughter today with it. ISO 400, 5.6 aperture, 1/400 speed, focal length 45mm. Manual setting. I usually choose my aperature and ISO, then spot meter and adjust my speed. When I look at the images 100% the sharpness is definitely not there. Of course, less than that it's not as noticeable. Today I also stopped down my f stop more than I have been. I love a blurred background and find myself shooting as wide open as I can but in an effort to achieve a sharper image today I closed it down to see if it improved things.
I really stretched myself to get this high quality lens but I am having a hard time seeing the fruits of my acquisition.
Please tell me it's user error. I can change that. I'd really like to love this lens.