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Hello, I recently picked up a very rare fujinon 20mm f.085 lens and am trying to find out more about it. It is large like a 35mm format lens. I own a cmount 25mm f0.85 fujinon that I love and I am hoping this has similar optical quality. I'm Also trying to work out how to mount it to the digital bolex cmount (the lens has a rear thread of 49mm), I've had success mounting m42 lenses with an adapter, my current plan is to use the c-mount to m42 (42mm) adapter and step up to 49mm but the step ring will take a long time to arrive, putting me outside the return window, thus why i'm trying to suss out the quality and mountability of the lens in the mean time. Any info appreciated, thanks! Measurements as follows: Image Diameter: approx. 20mm Rear flange distance: 13mm (from the rear flat barrel surface to the image plane). The rear thread extends out 6mm, so the distance from the rear of the thread to the image plane is 7mm. Filter Thread: 52mm Mounting thread: 49mm x 0.75mm pitch Weight: 1 lb. 15 oz. (0.9kg)
