Carl Zeiss Jena Tessar 40mm f/4.5-16.0

Lens categoryWide
Vendor nameCarl Zeiss Jena
Type nameTessar
Product year1950
Focal min (mm)40
Focal max (mm)40
Focus min (cm)40
Aperture max4.5
Aperture min16
Element(s)4
Diaphragm blades5
Filter size (mm)49
Carl Zeiss Jena Tessar 40mm f/4.5-16.0

This lens is a rather interesting sideline production item. One have to wonder why would CZJ produce such a lens when they have already the 35 Flektogon. None the less this lens is suppose to fulfill certain market niche for a wide angle ( ? ) lens. And considering the then standard lens for the Contax S was the 58 Biotar, 40mm is certainly wide when compared.

Except for a small batch of manual slim mount, all samples of this lens were manufactured in a preset mount and with the front element set deep inside the barrel. The lens project a rather dim image on the focusing screen and is still very hard to focus properly even when mated to a modern SLR with the improved focsuing screen. Many noted severe vignetting when viewed through the eye piece though the lens produce perfectly normal exposure on the film though.

1 Comment(s). Add a comment or Trackback

  • Bart J G Peeren, Zutphen, the Netherlands  11:30 Apr 16, 2005 

    Carl Zeiss Jena Tessar 40mm f/4.5-16.0

    Read the comment on this lens.
    Part of the comment is rather unjust to this little gem:
    >>>One have to wonder why would CZJ produce such a lens when they have already the 35 flektogon. None the less this lens is suppose to fulsill certain market niche for a wide angle ( ? ) lens.< << My opinion: Both the Zeiss Tessar 4.5/40mm and the Meyer Helioplan 4.5/40mm were pre-war designs and the widest lenses available for Exakta & M42 cameras until the early 50's Angenieux did not "invent" the retrofocal design ( inverted telephoto) for wide-angle lenses until after 1950 so, because of the mirror movement, real wide angle lenses like the Zeiss Biogon could not be used with 35mm SLR cameras. The Zeiss (Jena) Flektogon 35mm arrived even later so, up to the early 50's, these 40mm lenses were the only ones available. Please amend the description of this nice lens. Thanks, Bart.

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