Extens.Tube DG II Canon AF/EFS
The SOLIGOR extension tube set 12/20/36mm reduces the minimum distance of (D)SLR-lenses and makes them fit for close-up photography. Single or multiple tube combinations increase your flexibility for creative close-up shots of insects, flowers, and coins just to mention a few popular subjects.
The effortful mechanic and electronic construction of the SOLIGOR extension tubes allows the transfer of all automatic features, however the auto focus function may be limited, due to lost of light and little depth of field caused by laws of optical physics.
With a 50mm lens and a complete tube set you get a picture ratio more than 1:1 (related to 24x36mm size). You will have the best results with a small telephoto lens.