Rodenstock 360mm f6.8 Sironar-N, Multicoated, apochromatic, 64° angle of view, HUMUNGOUS 435mm image circle, recently overhauled Copal 3 shutter, very nice condition, FLAWLESS GLASS, perfect working condition, ships with two caps and retaining ring and flange. To be clear, this is identical to the Apo-Sironar-N optically and mechanically, the only difference is the branding on the barrel, 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).