I just bought a lens on eBay, which was advertised as a Schneider-Kreuznach Symmar 210mm f5.6. It arrived in the mail today, and sure enough the data ring lists 1:5,6/210, but also 1:12/370.
I'm assuming that means that this is a convertible lens. That's question number one.
Question number 2: The rear elements are "12/370." Does this mean that it's a 370mm with these elements, and a 210mm without them?
Thanks in advance. David
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