Reading lens reflections to determine type.

Discussion in 'Large Format Cameras and Accessories' started by andarc, Jan 4, 2010.

  1. andarc

    andarc Member

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    I am still not clear how to read some lens reflections. I purchased a no-name brass lens from circa 1900. When I shine a light on a group (half the lens) I see one large bright reflection and one much smaller bright reflection. Does anyone know how to interpret this? Thanks.
     
  2. domaz

    domaz Member

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    Probably easier to partially disassemble the lens to see what the configuration is. I.e. if it has a cemented doublet and an airspaced pair then it's a petzval (I think) etc etc..