• 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


    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!


  1. Jerome Marot

    Reducing transmission of SARS-CoV-2

    A summary on airborne transmission through droplets and aerosols and effectivity of masks to control such: https://science.sciencemag.org/content/early/2020/05/27/science.abc6197
  2. K

    Nikon D40 user... NEW here!!

    Hi all! Im Kristen! Im a soon to be stay at home mom with a burning desire to become a photographer and start my own business instead of just doing it as a hobby. Ive had my Nikon D40 for a year and a half now and have only touched the tip of the iceberg with all that an SLR offers. I only have...