Anyone ever heard of a Goerz No. K11?

[Peter Spangenberg]

I'm not sure what I have here. The lens is Goerz Am Opt. Co, but is marked "No. K11". The serial number is 801054. Relatively compact lens from a copy camera. Looks like it may be a Dagor design. Any help would be appreciated.

 

[Harrigan]

Some of the Kenro K2 lenses marked goerz were process dagors as far as I remember. I think they were 270mm or some such thing (the K2). Someone with more knowledge will chime in.

 

[darinwc]

It could also be an artar type.
1. What is the maximum aperture?
2. What do the inner reflections look like?

 

[kirkfry]

I have one in the original box. Dagor K-II #840025, made in 1972 ish by Kollmorgen, 301 Alpha Drive, Pittsburgh, PA, 15238. E.F.L. 269.75 mm.
Shortly there after Goerz by Kollmorgen was sold to Schneider. Black paint with red lettering around lens. Maximum aperture marked on barrel is F10 but it opens up wider. It was a private label lens sold to Kenro for copy cameras.

K

 

[Peter Spangenberg]

It could also be an artar type.
1. What is the maximum aperture?
2. What do the inner reflections look like?

Max aperture on barrel is f10, but it opens wider. I'm not sure what you mean by inner reflections.

 

[PHOTOTONE]

Max aperture on barrel is f10, but it opens wider. I'm not sure what you mean by inner reflections.

I think he means how many reflections, which is a way to determine how many glass elements and what type of lens design the lens is.

 

[darinwc]

could also be a goerz gotar...

 

[kirkfry]

Guys, it is a DAGOR. It says so on the BOX it came in. A process DAGOR.
It is a very sharp and contrasty lens. Just use it and stop worrying.

Kirk