I once saw the pictures taken with this lens and was just stunned. Saved up some money and bought not a new lens on Ebey. I didn’t have a Canon camera, so I turned to my friends to check its quality. When I took some pictures I was upset because it had a very small grip .. I made an announcement about its sale ... But one day my friend, a photographer showed me a video how to shoot with this lens ... I didn’t know before about staking. But in the end I bought good rails for macro photography ... I installed a program for gluing the stacking and I started to get it ...