How to meter backlighting...

Discussion in 'Beyond the Basics' started by Mumfandc, Mar 12, 2005.

  1. Mumfandc

    Mumfandc TPF Noob!

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    Hi,

    I'm planning on doing some photos of transparent colored objects hung on a white translucent background with either a direct strobe or strobe/softbox behind it. However, how am I supposed to meter this situation?

    I have a handheld Sekonic incident/reflective light meter. Thanks for any help.
     
  2. Hertz van Rental

    Hertz van Rental TPF Noob!

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    You take a direct reading from the light source. But what your meter is trying to do is give you that exposure as mid-tone grey. You therefore need to increase the indicated exposure to get the light back to white.
    You do not say what you are proposing to record onto.
    B&W film needs +3 stops
    Colour neg +2 stops
    Transparency +3/4 stop for reproduction and about +one-and-a-half stops for other purposes.
    But there are other variables - the colour the other objects come out for one thing - so this is just a rough guide.
    Bracket. Or better still shoot a test roll with 1/3 stop bracketing and keep a note of exposures.
    Digital you can check as you go.
     
  3. Mumfandc

    Mumfandc TPF Noob!

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    Oh sorry, I plan on shooting slide film...Provia 100F. Thanks for the very helpful response!
     

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