15mm Super Wide Heliar Version III Super Wide-Heliar is too good a lens for the landscape photographer to be left unfiltered. Four fins were removed (costs $175) to allow use of 82mm Circular polarizer and Neutral density filter as well as 100mm Rectangular Graduated neutral density filters. Lens is optically and mechanically in perfect condition. Using it on Full frame sensor camera with Polarizer and a 100mm holder with Graduated ND filter does not cause vignetting. Selling: 15mm Super Wide Heliar Version III (Version III of this lens is optimised for digital cameras), original box, instruction manual, front and rear caps and a 58 to 82mm adapter ring. This lens is an M mount and is adaptable to any digital mirrorless camera via the proper adapter. $900.