Old Scheiner to Modern ISO

Discussion in 'Lighting and Hardware' started by sergioiudicibus, Mar 2, 2012.

  1. sergioiudicibus

    sergioiudicibus TPF Noob!

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    Dear all,

    I have this Ombrux (Orig. Gossen) exposure meter with its table based on four Scheiner values (20°, 23°, 26° and 30°). I really want to use it to take pictures (becuase it seems to be working), but I can't seem to find a trustworthy site with a correct conversion table (to ISO)! All that I have consulted present different values!

    Does any have a good conversion table (or formula)?

    Thanks in advance,
    Sergio.


     
  2. 480sparky

    480sparky Chief Free Electron Relocator Supporting Member

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    Try here. It's Deutsch, but you should be able to figure out the numbers in the table.
     
  3. Helen B

    Helen B TPF Noob!

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    There were three different Scheiner scales. Gossen may have used the European one. Try taking a meter reading in full midday sun and compare the light meter reading to the Sunny 16 exposure, or to another meter. Which of the Scheiner scales your meter uses should then be evident.
     
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