We remark direct manufacturing quality L (pro) of Canon that dream so on point. A really clean bokeh, always a cut to the top even 2.8. A truly effective USM but majority of the time on the macro, one is manual and the manual focus is very easy even on the microscopic. No vignetting. No chromatic ventilation panels. A correction of ISO qu'épatante more. That is to say, with my Canon EOS 600D, iso management is not his thing and see beyond the 800 400 it really starts to get dirty. 100mm With this, I did not even afraid to shoot to 1600 or even 3200 iso without big glaring problems with noise. Supplied with a leather case for transport and a really useful lens hood and that on fiwe ring and not with screws (big advantage for storage).
In short, it is a goal that fully deserve the prize and I regret it forever I think.