Hello!
I've seen this petzval lens:
Without any information about the front and rear lens diameter information, no total length, speed..
With the serial number, I know that are early lens (from about 1857) without waterhouse stop slot with approximate speed of f4, and I suspect that are small, with a coverage of 4x5 aprox.
Is this information correct? Can someone provide me more information?
Thank you very much!!!
Miquel.
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