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Thread: This is odd

  1. #1
    CollinB's Avatar
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    Aug 2007
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    This is odd

    I was looking @ the rear cell on my B&L lens, and it's 23 1/4" f/l.
    The front cell is 18 7/8" f/l.
    The old B&L table never put a longer cell in the rear.
    http://www.cameraeccentric.com/html/...schlomb_3.html
    I got the camera from the original family owner, and it was apparently ordered this way in 1923.
    Makes me wonder ... any thoughts on this anomaly?

  2. #2

    Join Date
    Jun 2003
    Location
    Portland, Oregon
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    This sounds suspiciously like a convertible lens. The front and rear elements used alone behind the shutter will give their marked focal lengths. The two together form a third focal length, shorter than the individual elements used separately. It may very well be the case that someone assembled them backwards.

    Peter Gomena



 

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