Our IRON GLASS Cine TMIR-10A 28mm F3.5 PL is an old Sovjet Lens rehoused by IRON GLASS. It features a metallic 0.8 gear for focus and aperture. Very well suitable for full frame format. See here what IRON GLASS writes about this lens: MIR-10A 28mm F3.5 is a bit of a dark horse. It’s a less known Soviet lens, but very unique and worthy nevertheless. Its closest focusing distance very impressive at just 0.20m and it produces very shoot bokeh when wide open, though its aperture design, results in “sheriff star” bokeh when you step this lens down. This lens has minimal distortion, 3-dimensional feel and good sharpness even wide open, so it’s definitely worth considering.