Property me this lens gained recently and since then always like photographed. I have experimented before buying an old Nikon 50mm and was very satisfied, but it had no autofocus and especially no exposure when used with my D90. Therefore, the decision has been made here to invest my money. While it will cost at Amazon compared 24 euros more than the Canon-brother but is better from the processing and the Feeling her a lot. It has a smooth non-slip focus ring and positive for me and an aperture ring, because I sometimes like to take pictures with old analog Nikon FE. Photos top, super depth of field, quite natural bokeh (sometimes you can see the corners of the panel) and also with Macro rings fun to photograph! Also, the autofocus works until now quite well-behaved.