http://www.ebay.com/itm/152215...

Leica R 180/2 APO. For years I told myself it would be the last lens I'd ever sell. But money is a current issue. As sharp at F/2 as it is at any aperture. I only have ever used it at F/2. As sharp at the edges as it is in the center. True APO even in the most extreme shooting situations. OK, it weighs 5 pounds which does test the limits of my left hand/arm. Easy to MF since F/2 has such shallow DOF. You know you have the focus correct. True and accurate color reproduction unlike most modern lenses that artificially punch up the warm colors and saturation. Sorry, this is sounding like an ad. I just thought you might want to step into the world of great lenses for a moment. One major issue surrounding the newest large sensors is finding a lens that can keep up. This one does. Only thing that probably beats it is the newer Leica S line of lenses. But, as thy are so expensive and rare it is hard to find reviews. Gene

Yikes it better be for that price

There are many other great lenses that cost 2x - 5x times as much. It is sorta like reading the review of one of those exotic cars that can go form 0 - 60 in 3 sec. and costs $2M. Gene

A camera is only as good as the lens

Yes, for the best images one needs to (ideally) spend 10x - 20x times as much on lenses than on cameras. Cameras come and go. Great lenses last (almost) for ever. Gene