[LargeFormat] Roman numerals on Zeiss barrel lenses
Les Newcomer
largeformat@f32.net
Tue Jun 24 22:22:01 2003
http://home.twmi.rr.com/lnphoto/zeissbarrel.jpg
The above link shows two Zeiss lenses, the top is a 25cm Tessar with
the Roman numeral "X" and in subscript "2"
The lower lens is a Protar VIIa with the roman numeral "IV" and in
subscript "1"
The owner of the Tessar also owns two other lenses all marked "Ic" so
I assume they are Tessars.
He has an 18cm marked BVI (sub 2) and a 21 Marked VII (no sub)
Any ideas what these alien markings mean?
the only pattern I see is that the roman numerals increase in size as
the barrel dia increases.
My Protar, at f7.7 is the smalles and is marked #4
The 18cm f4.5 is marked #6 with an odd B in there
The 21 cm also 4.5 has to be larger than the 180 and is marked VII
and the 25cm is marked "10"
Not sure if there really were three different sizes of barrels between
a 210 and a 250mm, but it's a theory.