The Samyang 135mm features a floating type design, one Extra low dispersion lens element (Ed) for maximum optical performance. A circular aperture of T2.2 with 9 blades offer great bokeh for close head and shoulder portrait work, and short telephoto. To ensure high contrast and faithful colour reproduction, all lens elements have been covered with Samyang's multi-layered UMC anti-reflective coatings. The design and lens coatings offer impressively low chromatic aberrations, ghosting and flare. This lens is in excellent condition with only the lightest signs of use. The optics are clean and clear with no marks or scratches. There is an extremely minor amount of dust within the lens. The lens barrel shows only the lightest cosmetic marks. The focus ring is smooth and in great condition. The lens mount is in good condition.