(Fwd) Reversing HIE

["Willem-Jan Markerink" <w.j.markerink@xxxxx>]

------- Forwarded Message Follows -------
Date:          Wed, 31 Jul 1996 18:04:29 +0200
Reply-to:      infrared-photography@xxxxx
From:          jim Henderson <74023.723@xxxxxxxxxxxxxx>
To:            w.j.markerink@xxxxx
Subject:       Reversing HIE

Hi,

 Several people on the Infrared Photography group have expressed interest and
curiosity about reversing Kodak High Speed Infrared film directly to slides.

 By way of introduction, I have been using infrared films for scientific as
well as for fine arts applications since 1975.  I have found its diversity of
developmental effects obtainable fascinating with different developers.  The
information I have seen on this list is most useful and I would like to share
some information with you about reversal directly to a black-and-white
transparency.

 Kodak introduced a new and improved reversal process with the introduction of
their TMax series of films several years ago.  The process comes in kit form. 
One unique advantage of this kit is that the user can increase film contrast by
adding up to 50gm sodium sulfite to the first developer. The information
listed below is based upon the addition of 45 grams sodium sulfite to the
first developer.  The kit costs about $28 (US) and can process up to 12 rolls
of 36 exposure 35mm, 70mm or even 4x5.  The kit has good instructions and once
mixed will last for at least 6 weeks when stored in amber glass bottles.

 There are several advantages to reverse processing.  One significant advantage
of a positive is the ease with which you can scan it into a computer using a
film scanner or through Photo CD Rom.  Two other advantages are the very high
film speeds and the lack or grain.

 Please note that the film speeds listed below do not compensate for through
the lens metering systems.  You will have to calibrate your system first.

 Light Source                Filter            Film Speed (ISO, E.I.)

 Daylight--------------------none-----------------------1200
 Daylight--------------------#25 red---------------------640

 Tungsten------------------none-----------------------2400
 Tungsten------------------#25 red--------------------1200

 Enjoy!

 Jim Henderson
 Applied Scientific Photography
 74023.723@xxxxxxxxxxxxxx

--
Bye,

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The difference 
between men and boys
is the price of their toys

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

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Topic No. 8