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View Full Version : idle curiosity Heligon I.D.


RichL
06-24-2010, 17:13
On my lens, between "f:2/50mm" and "Rodenstock" is a red A. Does anybody know what it indicates?

JPD
06-25-2010, 01:51
It just means that the lens is coated. Different makers used different markings for their coated lenses. Zeiss still use their red "T" or "T*", Schneider used a red triangle, Steinheil used "VL" and Agfa a red ring with a dot in the middle.

Not sure what the red "A" is supposed to stand for, though. Maybe "Antireflex-" something.

RichL
06-25-2010, 04:23
Thank you, I'm sure I'll rest easier tonight. :-)

rpjasin
06-29-2010, 19:06
What Retina model are you referencing with your question? Bob

RichL
06-29-2010, 20:23
IIa type 016

Rodenstock lens manufactured 1952