• Please use real names.

    Greetings to all who have registered to OPF and those guests taking a look around. Please use real names. Registrations with fictitious names will not be processed. REAL NAMES ONLY will be processed

    Firstname Lastname

    Register

    We are a courteous and supportive community. No need to hide behind an alia. If you have a genuine need for privacy/secrecy then let me know!
  • Welcome to the new site. Here's a thread about the update where you can post your feedback, ask questions or spot those nasty bugs!

exposure meter

  1. Doug Kerr

    About that 18%

    In discussions of exposure metering and such we often see mention of the value "18%". But just what that represents, and under what conditions, is often unclear - and some of the statements we see are just wrong. The situation is complicated for the researcher by the fact that this number...
  2. Doug Kerr

    "Norwood's dome" on incident light photographic exposure meters

    Most "traditional" hand-held photographic exposure meters for incident light metering have a "light collector" in the form of a hemisphere or thereabouts. The story behind this is very convoluted, but here is a synopsis. In cinematography, say as of the 1940s, incident light exposure metering...
Top