ZEISS Ikon Biogon T* ZM 2.8/28 Wide-Angle Camera Lens for Leica M-Mount Rangefinder Cameras, Black

Simply superb---the warmth of colour rendering and unbelievable sharpness are unbelievable.The rendered detail on each shot is exceptional. I am so glad I bought this product. The only negative comment I could make is that there is a little cut-off in the viewfinder lines in one corner of both the M6 and M9, but it is no great problem. As with the Carl Zeiss 50mm f2 lens, the front lens cap is flimsy and not very substantial, but that presents no problem---non-proprietary caps are available very cheaply on line. My advice is to get one of these and store the original cap in the lens box, to retain the full monetary value of the lens. After all the lens cries out to be used in varieties of ways, it isn't a piece of jewellery