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Re: Focus Correction on Sigma APO's and EIR film

  • From: "Willem-Jan Markerink" <w.j.markerink@xxxxx>
  • Subject: Re: Focus Correction on Sigma APO's and EIR film
  • Date: Wed, 30 Jul 1997 09:35:09 +0000
On 29 Jul 97 at 15:44, JoePaduano@xxxxxxx wrote:

> Rolland, the infrared focusing marks on lenses are for b&w infrared, not EIR,
> as EIR does not require a focus adjustment.

Joe, note that he used a #87C, not a #12.
In that case it should be no different than HIE....his 
recommended 25 ASA (50 was too dark, right?) is almost in the same 
category as well....




- -- 
Bye,

Willem-Jan Markerink


      The desire to understand 
is sometimes far less intelligent than
     the inability to understand


<w.j.markerink@xxxxx>
[note: 'a-one' & 'en-el'!]
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