I recently and very impulsively purchased a 485mm f/9 Rodenstock Apo- Ronar lens, single-coated in barrel. I knew when I bought it that it is a proces s lens very similar to the Apo-Artar, with a narrow angle of coverage. After purchasing, I did a few web searches, and only found reference to the 480mm Apo-Ronar, but nothing to the 485mm. It appears to be a fairly recent lens -- being marked as 'made in Germany'-- but there is no referece to it on Rodenstock's web page. Serial number is just short of 10,000,000.
Also, I notice that there are two markings for the apeture, one is standard f/ stop from f/9-260, and the other appears to be in mm, 2-50mm. There is also a small lever which appears to open a narrow slot between the elements, which I assume is for waterhouse type stops.
If anyone can tell me about the 485mm lens, I would appreciate it. I have read through comments on the 480mm, but am unclear if this is the same lens. Thanks in advance.
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