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Re: 18% gray card question

  • From: "phillip geller" <filje@xxxxxxxxxxx>
  • Subject: Re: 18% gray card question
  • Date: Sat, 3 Mar 2001 12:18:23 -0600
> 
> Hello all -
> 
> I've been doing some Zone system calibration on
> non-infrared B/W film, and would like to use some 
> of those techniques with IR film.
> 
> But I have one question - does anyone know if a 
> Kodak 18% gray card is still 18% gray in the range
> of IR, say 650-900 nm???
> 
It looks grey to a sony in nightshot mode through
an 88a under tungsen light. I'd say it is.

Phil

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