This is harder than expected! I have acquired two lenses, but both have a mount problem. The first is a huge and heavy Symmar 360mm, which has no retaining ring. Any source for such a thing? S K Grimes?
The second is a Nikkor-M 450mm, and despite using a proper lens spanner, I can't loosen the retaining ring at all. Even then, there is an extra ring for lens extension tubes, which I don't think I will need on a 10x8 camera, and which is larger than the 65mm hole in my lens board for its Copal #3 shutter.
Again, I'm wondering if I hadn't better just ship both of them to S K Grimes. Unless any of you clever folks have easier solutions?
Chris
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