The one picture, #5 of 8, suggests that the lens is in need of cleaning. The fingerprint right in the center will certainly reduce contrast and resolution.
It doesn't matter whether you can get a photo of any haze, what matters is that you get rid of it. As i said, haze can be hard to spot - sometimes you need to really work at it, altering the angle of the light until it appears. It takes very little haze to reduce contrast, and the J-8 is a contrasty lens when clean; at least mine is - and so was it's uncoated ancestor, the 5cm/2 Zeiss Sonnar as long as you shaded the thing. If you disassemble the lens to clean it, beware!! I had to strip mine twice because the haze was not visible immediately after cleaning, all I can think of is hydration from the cleaning fluid made it less visible. When it dried out again, the haze was still there somewhat. Let it sit at least overnight before reassembling, the less you dis- and re- assemble these the better.
The serial of your J-8 is on the side of the focussing ring, from the looks of yours the number might begin '0' or '00' in which case it will not date the lens. For instance, mine is #7518177 made in 1975. The body was made in 1971, which means it's 42 years old and should be CLA'd if it hasn't already.
Last edited by E. von Hoegh; 12-10-2013 at 01:34 PM. Click to view previous post history.