On topic, I recently acquired a J-8 lens, a black one from 1975. Sample size of one here, not statistically significant.
After de-oiling the aperture and blackening the blades, and removing an amazing quantity of nasty grease from the rest of the lens mount and aperture ring, and removing some incredibly stubborn haze from the internal glass surfaces - I'm very pleasantly surprised with a lens that behaves just like a coated version of the 5cm/2 uncoated Sonnar I had on a prewar Contax II. The focussing is as silky smooth as any lens I've owned. It's not a modern lens and don't expect it to act like one, but it's more than sharp enough at say f;4/5.6 and a lot of fun to use!
Last edited by E. von Hoegh; 12-07-2013 at 02:30 PM. Click to view previous post history.