Archived posting to the Leica Users Group, 2002/06/21

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Subject: [Leica] Correct Infra Red Film Exposure Setting
From: "Greg J. Lorenzo" <gregj.lorenzo@shaw.ca>
Date: Fri, 21 Jun 2002 21:20:38 -0600
 
I've never photographed with IR film but I bought some Konica IR750 to 
try out.

Konica rates film speed at 32 ISO for this film without use of a filter. 
But what is the correct ISO setting when using a Wratten #25 Red Filter 
with a M6TTL camera?

I assume that the meter sees more light than it thinks it sees and that 
I should rate the exposure at about 400 ISO?

TIA for any recommendations.

Regards,

Greg



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Replies: Reply from Henning Wulff <henningw@archiphoto.com> (Re: [Leica] Correct Infra Red Film Exposure Setting)