Isco-Gottingen Westromat 135 mm f/ 3.5 Lens

The Isco-Gottingen Westromat 135mm f/3.5  is a telephoto prime lens for 35mm SLR cameras with the M42 screw mount.

This is a rather rare single-coated lens, manufactured in the 1960's. It is very difficult to find any details about this lens. It is supposed to descend from the Schneider-Kreuznach Tele-Xenar 135/3.5 lens, manufactured by the parent company. The lens came with the Exakta bayonet under the name of Auto Tele-Westanar 135/3.5. It is compact but rather weighty:  the lens body is constructed from brass with darkening, black enamel.

Additional information:

• diameter 86 mm
• angle of view (diag/horiz/vert) 26°/21°/16°
• max. magnification 1:6.8
• internal rear focus

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