RE: Dealing with reloading in daylight

["Michael Dziak" <fetch_the_ball@xxxxxxx>]

Nikon also made them for the F1 and F2 cameras.  I have some for sale, I 
switched to ESOS cameras.
If interested call me for price and availability

- ----------
From: 	owner-infrared@xxxxx on behalf of Wayde Allen
Sent: 	Friday, July 25, 1997 10:40 AM
To: 	infrared@xxxxx
Subject: 	Re: Dealing with reloading in daylight


On Thu, 24 Jul 1997 ANDPPH@xxxxxxxxxxxxxxxxxx wrote:

> But it turns out that this is a minor problem. The major one seems to be
> a leak probably through the felt which does not go through the film
> leader but rather leaks past it at the top and bottom of the cassette
> and reaches the IR film located towards the core of the spool. The film
> leader does not provide a "tight" seal against the plastic top and
> bottom spool flanges. I just measured the distance on one spool and
> found it to be about 35.6 mm ... I also found that 35mm film measured
> 34.8 mm. If this is prevalent then the .8 mm gap may be sufficient to
> allow some light (actually IR if the felt trap is not totally IR proof)
> to leak in towards the core of the cassette. 

I have heard about film cartridges made with feltless light traps.  I
think the manufacturer may have been Leica, but am not sure.  As far as I
know these are also no longer made, but they might be available on the
used market.  I'm wondering, since we are talking about reloading
cartidges anyway, if using one of these cartridges with an opaque leader
would be an improvement?

Does anyone know about this kind of cartridge?  Are they still available,
and if so from where?

- - Wayde

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