Re: HIE in Bronica 135W film Backs

[Cameron Shaw <cameron@xxxxxxxxxxxxx>]

George L Smyth wrote:
> 
> On Thu, 22 Jul 1999, Otto Giesenfeld wrote:
> 
> > Is it the felt that leaks light into HIE cartridges? If so, it would seem
> > easy for Kodak to replace it with some more effective kind of felt. I kind
> > of thought that, instead, it was the lack of anti-halation layer in the
> > film that was the culprit. (Making the film act as an optical fibre and
> > lead light into the cartridge.) Is there a well-established knowledge
> > (outside Kodak) on why HIE has to be loaded in darkness?
> 
> I asked Kodak's head IR guy about this when preparing my article on EIR,
> and was told that the felt is not IR opaque, AND the
> film does not have an anti-halation layer.  This is why HIE needs to be
> loaded in the dark.
> 
> george
> 
> ---
> Handmade Photographic Images
> http://www2.ari.net/glsmyth/
> 
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