[davidmanze]

While buying a S/H  FA* 300mm F4.5 yesterday the guy showed me his pride and joy lens the monster M42 Optic 560 mm F 7.1 fixed, which he uses for birding, This lens is only a 2 element couplet design that sells for 475 euros . When he showed me the photos I was gob smacked, approx. 20x30" prints, JPGs only, supersharp  great colours,great bokeh,competition winners!  He then mounted my K5 on it and I took a couple of photos of flowers to look at home. Hear is the JPG (with  little contrast boost but nothing else) The irony is that he has just switched to a Nikon D7100 with and yes, a Sigma 300mm F2.8 and he was obviously despairing at where his sharpness had gone with his new system. He looked very perturbed actually.