I tried it on a DV camera, and thus did not need to go to the extremes of
120 film (!) - a stub of 35mm film was fine, cut to a 43mm circle and popped
into the front of the lens. Of course, it wasn't a complete circle, but
good enough for the task at hand. Splendid results. You could try two
layers at right angles to one another. One layer is approx Wratten 87, two
layers nearly Wratten 88. I believe that the Hoya R72 equates to a Wratten
89B - you can find sone data close to home here:
http://msp.rmit.edu.au/Article_03/02c.html
Not sure what more instructions you could need, Wayne, aside from the Dept
of Home Security advisory on non-invasive use of scissors ;-) but the germ
of this idea came from Andrew Davidhazy at RIT:
http://www.rit.edu/~andpph/text-infrared-filter.html
Keep in mind that if after a tryout with 35mm you do feel the need for 120,
you don't need a MF camera - you don't need a camera at all, just wander
down to get a roll of outdated anything, and just hand it back over the
counter for processing, unmounted. Easy!
--
Piers
-----Original Message-----
From: olympus-owner@xxxxxxxxxx [mailto:olympus-owner@xxxxxxxxxx] On Behalf
Of Wayne Culberson
Sent: 02 December 2005 16:31
To: olympus@xxxxxxxxxx
Subject: [OM] Re: hoya r72 questions
Well, what I was planning was to try infrared-type photogrpahy with the
digital cameras. I haven't really heard of your suggestion, but am wondering
how the exposed film would work, as it has to be big enough to cover the
lens. So I'm guessing it has to be Medium format or larger film, then fitted
somehow (light tight) to an empty filter? Sounds interesting. Any further
instructions, or website you can point to?
Wayne
----- Original Message -----
From: "Piers Hemy" <piers@xxxxxxxx>
To: <olympus@xxxxxxxxxx>
Sent: Friday, December 02, 2005 9:39 AM
Subject: [OM] Re: hoya r72 questions
>
> You might like to try using a piece of unexposed but fully developed E6
> film, Wayne, if you are planning what I think you are planning. Opaque to
> you and me, but transparent to IR. Cheaper and easier to get hold of, too.
>
> --
> Piers
>
> -----Original Message-----
> From: olympus-owner@xxxxxxxxxx [mailto:olympus-owner@xxxxxxxxxx] On Behalf
> Of Wayne Culberson
> Sent: 02 December 2005 13:21
> To: olympus@xxxxxxxxxx
> Subject: [OM] hoya r72 questions
>
>
> Does anyone have experience with using a Hoya R72 on an Olympus C5050, or
> C*non XT, that could offer some opinions? or any advice on the best place
to
> purchase them?
> Wayne
>
>
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