I've got a barrel mounted 300 Xenar 4.5 (from a forum member) that, with great hardship, I have managed to mount to a board. I notice that the lens is constructed a lot differently than the older 300 xenars mounted in a compound. No brass. Different size flange, or at least the outer diameter of the flange. And interestingly this baby only goes up to F/32. Was it maybe used as a copy or enlarging lens?
Do you think there are any image quality differences between this and the older version?
The serial is: 11 984 208
Thanks
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