simple lenses

Discussion in 'Large Format' started by ross_shepherd, Feb 26, 2006.

  1. Has anybody tried using simple lenses like loupes or diopters or
    reading glasses etc. as lenses also if I were to do so how would I
    calculate aperture?
  2. Ross,

    Sure, it's a lot of fun.

    As for calculating f-stops,

    Also, verify with a Polaroid before doing any "critical" work.

  3. How would I calculate the focal length of the lens?
  4. Don't calculate, measure.
  5. How do I measure?
  6. Use it as a burning glass. Focus it on the sun, measure lens to hot spot distance.

Share This Page