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Re: Konica IR film

  • From: George L Smyth <GLSmyth@xxxxxxx>
  • Subject: Re: Konica IR film
  • Date: Wed, 13 Nov 1996 06:49:59 -0500
Lee, Kevin wrote:
> 
> Does this mean, I should rate the film from 32 to (say) 250 ASA (3 stops)
> from 32? The FAQ Chapter 11 confuses me as I would think one should
> open up rather than close down.

No.  Very simply, place your in-camera meter at 10 and place the filter
over the lens.  Metering through the lens, shoot at the indicated
aperture/speed.  My #25 filter loses 2 stops, which corresponds roughly
to Konica's suggestion (EI32 - stops = EI8).

> Is EI10 = 10ASA?

Yes and no.  ASA is an official designation, whereas EI is simply
"Exposure Index."  I use this term because it is more meaningful to me
as an indication of the speed I shoot the film at, as opposed to how a
film is rated.

george

-- 
 Handmade Photographic Images     
  http://www2.ari.net/glsmyth/



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Topic No. 13