orthocromatic film?

Discussion in 'Beyond the Basics' started by MrEd31, Nov 30, 2003.

  1. MrEd31

    MrEd31 TPF Noob!

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    I was looking at some photos and I came across some striking images. The caption said that the photographer used agfa ortho 25. I am wondering how orthocromatic film works. What is it used for? I understand that it is insensitive to red light, but why not just use a red filter and pancromatic film? Some help would be appreciated, thanx!
     
  2. dlc

    dlc TPF Noob!

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