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Re: [OM] Colour correction filters - update

Subject: Re: [OM] Colour correction filters - update
From: John Hudson <xyyc@xxxxxxxx>
Date: Sat, 03 Feb 2001 18:46:35 -0800
John Hudson wrote:
> 
> I need to take some photos using day light negative film under both
> tungsten and photolamp / hotlamp lighting.
> 
> I have an 80A filter to correct for the tungsten lighting but I do not
> have an 80B filter to correct for hot lighting.
> 
> Tungsten is 3200K and photolamps are 3400K.
> 
> To what extent will an 80A filter fail to correct for photolamp
> lighting? Perhaps 100f the photos will be white or up to and including
> zone 3 grayness. The remaining 90% will zone 4 and beyond in terms of
> shades of gray. I am photographing inanimate objects and not people.


=========> I should have said that these zones are those on the Kodak
Gray Scale which go from 0 [A] [pure white] up to and including 19 [pure
black].
 
> John Hudson
> Vancouver, BC
>

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