Re: Infrared-Digest V #431

[George L Smyth <glsmyth@xxxxxxxxxxxxxxxxx>]

On Mon, 27 Sep 1999, Gary Beasley wrote:

> >From: George L Smyth <glsmyth@xxxxxxxxxxxxxxxxx>
> >Subject: Re:Answers to several EIR questi
> >
> >EIR does not have an anti-halation layer (checked with Kodak just to make
> >sure).
> >
> >george
> >
> So how does EIR avoid the haloes? Does the emulsion layers below the IR
> layer do the trick? If so you could consider it to have some antihalation
> properties. Also does it have the same estar film base as HIE that would
> pipe light deep into the roll? Last time I processed a roll of EIR sometime
> back in the last ice age I remember it to be on normal acetate base like
> regular Ektachrome.

My guess is that there are three color layers that light needs to go
through before striking the pressure plate, then another before it gets
back to the infrared layer.

I'm not sure if the film base is the same as HIE, but it is definitely
thinner than most other color reversal film.

Cheers -

george

---
Handmade Photographic Images
http://www2.ari.net/glsmyth/

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