completely newbie's question about filters

Discussion in 'Beyond the Basics' started by gratings, Oct 9, 2005.

  1. gratings

    gratings TPF Noob!

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    Being a red/green/blue/yellow filter, will the filter block out or transmit this colour's light? It seems the articles on the internet conflict each other.
    Thanks a lot in advance!
     
  2. FuddyDuddy

    FuddyDuddy TPF Noob!

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    Hello

    Yes, a filter will allow light of its own colour to transmit whilst blocking its opposite colour. So a yellow filter, for example, will transmit yellow but will reduce transmission of blue. A red filter will transmit red, while blocking cyan (blue+green).

    F. Duddy
     
  3. ksmattfish

    ksmattfish Now 100% DC - not as cool as I once was, but still

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    Here's a color wheel.

    [​IMG]

    A colored filter blocks the colors on the opposite side.
     
  4. Hertz van Rental

    Hertz van Rental TPF Noob!

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    To add to that:
    For example, a green filter will make magenta come out very dark. Red and blue will also appear darker. Yellow and cyan won't be affected. Green will come out lighter.
    Only works with B&W film, remember.
     

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