This lens does in every respect pure joy. The workmanship is very good. The handling class - easy grip, responsive to the slightest adjustment movement. First-class sharpness even at f / 1.8 - razor sharp then from f / 2.5 wonderful soft bokeh both full frame 5DM3 or 1.3 Crop (BW 110mm) with my 1DMK4. Especially recommended for head portraits to chest level. With my Kenko converter 1.5x the lens can withstand very well. So I can do with the MK4 has a proud focal length 165mm of on KB converted in brilliant quality. Macros with extension tubes (21 or 31mm) no problem and no visible quality loss. No matter how you look at it. The lens is only fun and joy. Unique buy recommendation. Pricewise also a real bargain.
