Thank you for looking and remarks. The lens which was used was a Canon MP-E 65 - a special lens allowing magnification rates up to 5:1 -without additional equipment. I own this lens since a couple of years and like it very much, although no autofocus can be used. In this case the lens was used together with my 5 D III, but recently I bought an adapter, which makes it possible to use it together with my Leica M 240 - aperture has to be set before adapting it on a Canon camera or open aperture must be used.
3
heinzx 
