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Light metering in heavy fog?


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#1 Norbert Shieh

Norbert Shieh
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Posted 24 February 2006 - 03:57 AM

Hey everyone, got a quick question.

I'm shooting some 16mm Plus-X in the early morning hours (sunrise) with heavy fog set in the scene. The setup's simple; no lights, just natural lighting with a person walking around in the fog. I'm not sure if the reflected light readings I'll get would be effected by the fog, or if i would be exposing right for the high contrast. Any tips on getting something accurate or how to properly expose in this situation?

Thanks!
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#2 David Mullen ASC

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Posted 24 February 2006 - 11:48 AM

Sort of depends on the shot. If it's a person silhouette against a field of gray fog, then you'd want to spot meter the fog and determine what shade of gray it should be (maybe one stop over 18% gray.)

If it's a person's face lit with overcast light surrounded by fog, you might want to take an incident meter reading on the soft light of the person's face and underexpose a little, like by one stop, to keep the feeling of low light. (You don't have much of an exposure range in reversal though.)

This is where having shot an over and underexposure test of the stock pays off.
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