Carl Zeiss JENA Flektogon 4/20mm (20mm f/4.0) in Exakta mount - MIR image library

Carl Zeiss JENA FLEKTOGON 1:4 f=20mm Ultra-wideangle lens Quick Spec Sheet: Focal Length: 20mm Aperture Range (maximum/minimum): f/4.0~f/22 Number of lens element: 10 Closest focusing distance: approx. 16cm Filter attachment size: 77mm Weight: 320g Note: The original f/4.0 version was eventually replaced by the 9 elements, slightly lighter (300g), Carl Zeiss Jena Flektogon 20mm f/2.8-22 which uses 67mm attachment size and close focus at 19cm. RELATIVE:- Identification on various lens mounts by my friend, Mr. Rick Oleson | Back to Contax/Zeiss Index Page | | Leica/Leitz | Contax/Zeiss | Nippon Kogaku-Nikon/Nikkor | Seiki Kogaku/Canon | NOTE:- Basic visual references only for some of the popular series, other combinations/variations may exist. For other issues, you may use the relevant | Message Board | lenses | Message Board | cameras   Credit: Image(s) courtesy of Rokas Kundrotas®. where he is more well known as maintaining another popular Rokas Photo & Videao @ EBAY with another personal site at www.Kundrotas.com - both kept a huge inventry for many used collectible equipment of major camera labels. Image copyright © 2008. All rights reserved. Please respect the visual property of the contributing photographer. ***