Hi all,
Finally I got this lens, I already dated it, it's from 1909-1911.
But being a f7,2 is the most intriguing fact.
I read a lost of old documents, english and french mainly but all the references for Tessar are f6,3, f4,5, etc.
Anyone can add info about it? Is it like a transition lens from Zeiss double-anastigmat?
Confirmed the presence of two lenses at the front and a double-cemented at the back.
Thank you,
Alex
Bookmarks