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Tenar lenses

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The Tenar lenses were mounted on a few Japanese cameras in the mid 1930s.

Documents Edit

The Tenar name is mentioned in various period advertisements, but the original documents found so far do not specify the actual manufacturer or distributor of the lenses. The lens was only offered on 6×9cm or 6.5×9cm cameras (whose standard focal length is 10.5cm), and the documents only mention f/4.5 aperture.

The Tenar 10.5cm f/4.5 lens pictured below is mounted in a Rulex B shutter (5–150, B, T) by Neumann & Heilemann. Its front bezel is engraved Tenar 1:4,5 f=10,5cm Neumann Jena Nr xxxxxx. The marking surely indicates that the lens was assembled and sold by Neumann & Heilemann. The word "Jena" was surely added to deceive the customer into thinking that the lens was made in Germany — though the Tenar might have been assembled from imported optical glass or loose elements.

Cameras equipped with Tenar lenses Edit

Not all the versions of the cameras listed below had Tenar lenses:

Notes Edit

  1. Sugiyama, item 1043.

Bibliography Edit

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