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[OM] Re: IR film --- Kodak HIE

Subject: [OM] Re: IR film --- Kodak HIE
From: "Michael Wong" <mialop@xxxxxxxxxxxx>
Date: Sun, 12 Aug 2007 10:56:20 +0800
Moose,
Thanks for your advice.

-- 
Michael

An Olympus OM system fans


2007/8/12, Moose <olymoose@xxxxxxxxx>:
> Michael Wong wrote:
> > Thanks, Bill.
> >
> > By the way, may I shoot with TMAX B & W film and Gelatin filter to get
> > such effect?
> >
> Most films are intentionally not sensitive to much IR for practical
> reasons. IR is also called heat, and true IR film has all sorts of
> handling sensitivities. You wouldn't want to hold a roll in your fist,
> for example, or you will fog the outer part. Dimples in pressure plates
> have been known to show up as a ghostly pattern in IR shots, and so on.
> Leave a black camera with its back in the sun and away go your images.
> You need to keep it cool and develop it promptly.
>
> Also, as someone else pointed out, a C-41 film needs to be even les
> sensitive to IR, as some automatic processors use IR sensors. So I'm
> sure you won't get anything as dramatic by using a filter with a C-41
> film, probably just a ghost of an image.
> > Besides, I know there is Hoya R72 filter for digital will get such
> > effect. Is it possible Hoya R72 filter with HIE may get such effect
> > too?
> >
> I don't know about that Hoya filter. If using HIE, why not use the known
> correct filter(s)? They aren't expensive.
>
> I do know that many, if not most, digital cameras intentionally filter
> out much IR. Weak IR filtering is at the source of the magenta trouble
> with the M8 and Leica is handing out free IR filters to correct it. I
> also recall a fellow who took apart his Nikon digicam, removed the
> internal filter and got some good IR results.
>
> Generally, cameras and film do better for general purpose photography if
> they do not have response into the IR and UV wavelengths, as it can
> throw off color/tonality. So general purpose cameras and film have
> limited IR potential.
>
> Moose
>
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