Re: IR- screw Leica rangefinder option? Don't know yet...

[boblong@xxxxxxxxxxx (Robert Long)]

On Mon, 26 Aug 1996 23:25:56 +0100,  "joe b." wrote:

|In message <199608201334.OAA09334@xxxxxxxxxx>, Willem-Jan Markerink
|<w.j.markerink@xxxxx> writes
|>You also need a rangefinder camera when shooting a hectic wedding 
|>situation with opaque IR filters btw....;-))
|
|This is partly inspired by a comment elsewhere from W-J about using a
|Russar on an old Leica body. FWIW I recently got a rather nice but used
|Leica IIIC which I like very much. I didn't get it specifically for IR
|photography, but since it was only UKP 195.00 its IR potential may be of
|interest, if it has any IR potential other than EIR, that is! In

Am I missing something here?  EIR--meaning Ektachrome IR, I
assume--would not profit from an "opaque" (sorry, W-J, but you did use
that term yourself!) red filter.  Its recommended filter is
minus-blue--which looks similar to a medium yellow and thus can be
seen and focused through very easily.  So why would a rangefinder
Leica IIIc be particularly appropriate for this film, or it for the
camera?

Or am I wrong about the filter?  I've only used IR Ektrachrome with
the yellow, orange, and red filters, and my experience confirms what
the Kodak instructions imply:  Using anything but the minus-blue
simply limits, in one way or another, the color range of which the
film is capable.  The "opaque" filters would, I should think, limit
the range even more than the red (probably a Wratten 25) that I tried
and decided never to bother with again.

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Topic No. 14