Re: Questions/Intro

[George L Smyth <GLSmyth@xxxxxxx>]

Jeff Spirer wrote:
> 
> I am new to the list and have a few questions.
> 
> 1) For IR, I normally use HIE in 35mm, but my lab recently gave me Konica
> 750 in 120 format.  The sheet is in Japanese, Konica's web site ignores IR
> film as far as I can tell, and I just can't find the info.  Questions are
> what filters with what general EI range.

Konica IR doesn't extend as far into the IR range as Kodak.  Expose in
the neighborhood of EI10 with a #25 filter.  Of course, IR filters can
also be used.

> 2) For my Rollei (TLR), the only red filter I have is the standard one for
> b&w work despite looking everywhere for a Rollei IR filter.  (I did find
> one but the price was ridiculous.)  Also, the Rollei IR filter is opaque
> (one reference says the type for the opaque filter is Agfa No. 83) and I am
> wondering if this works with Konica 750.  Also, what type the "normal" red
> Rollei filter is would be useful information.

The opaque filter should work just fine.

> 4) So finally, if the above is in fact not true, since the Rollei does not
> have an IR focusing mark, what is the preferred method for focusing a
> Rollei with IR film?

Focus, then turn the knob back slightly.  This is the method I use when
using my Crown Graphic and it works just fine.  You won't run into any
problems unless you open the aperture and shoot close.

george

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

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Topic No. 10