Helping finding a converging lens with focal length of several feet

Discussion in 'Photography' started by Dave, Apr 26, 2007.

  1. Dave

    Dave Guest

    I am building a large camera obscura.

    Can anyone recommend where or how to obtain a converging lens with a
    focal length of several feet (for less than $200)?

    I am open to unique suggestion,s even if they result in some
    distortion of aberration.

    Dave, Apr 26, 2007
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  2. Dave

    dadiOH Guest

    I'd browse at Edmund Scientific...

    Especially this division...
    At your price you can count on it.



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    dadiOH, Apr 26, 2007
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  3. Dave

    Pat Guest

    what about stealing the lens out of an old opaque projector. I am not
    recommending this specific one but am using it only as an example.
    Pat, Apr 27, 2007
  4. Dave

    Menno Guest

    Old glasses. I think +1 diopter equals 1m focal length.
    Menno, Apr 27, 2007
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