RE: Konica IR 750 with tungsten lights

[Dan Cardish <dcardish@xxxxxxxxxxxx>]

At 04:00 PM 27-01-97 GMT, Hannu wrote:
[snip]
>I used TTF (through the lens with filter) metering with Canon EOS 600.
>The filter was Hoya 25A red, which should be equivalent to Wratten #25.
>In the camera I has EI 400 and I bracketed +/1 f-stop.
>
>Normally I use Konica IR 750 outdoors with EI 100 metered
>the same way.

Wow, this is much differant than what I've been used to.  I meter TTL with a
25 red filter with EI=32.  When I used it in a studio, I metered separately
but forgot about the filter factor, and severely underexposed the film.  In
other words, in effect I metered TTL with an effective EI of about 128 (2
stops, I think?).

Dan C.


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