Rodenstock 240mm f5.6 Apo-Sironar-N, private labeled by Rodenstock for Sinar (some suggest at stricter tolerances) as the Sinaron S, Multicoated, 72° angle of view, 350mm image circle, recently overhauled Copal 3 shutter, nice condition, FLAWLESS GLASS, perfect working condition, ships with two caps and retaining flanges, it is also very similar in sharpness and contrast to the Apo-Sironar-S, it just has slightly less coverage (a little more than 1/2 inch on all sides).