This is a lens I owned a while ago, and ended up selling due to lack of use.  I’m 99% sure that will be the case again this time, but someone offered it to me in trade for my sigma 20mm.  So I swapped knowing I can sell this easier than the sigma.  These images are test shots with my 24-105 w/tubes, 135L w/tubes and the macro (which I also used the tubes on).  These just show how close you can get with each combo.