I wonder if this can work. Wide lenses give a large DOF and that I need. The ED 17mm f/1.8 lens has, however, a too great minimum focus distance and low magnification. With Extension Tubes you can adjust this. There exist extension of rings 10, 16 and 25mm. My question is whether it is feasible with one of these Extension rings. And if so what is the magnification and the working distance of the (front side) lens to the object. I would like to buy the E-P5 set and have to decide whether I would use the 17mm lens. I know the 60mm macro lens is an alternative but you never obtains this extra large DOF. I am afraid that even the shortest Extension Tube is too big for the 17mm lens. Has anyone ever tested such a thing?. I now use something similar with my E-PL3 and the Lumix 3D lens and that really works great (adapted with 1mm spacer in the lens). My working distance on the 3D lens is about 150mm from the frontside of the lens to the object. My picture frame on the E-PL3 is less than 120 mm. The DOF is extreme good. Now I would like something for 2D images. Can someone help me? Frans.