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Re: [Rollei] Hyper-sensitizing



Edmund Scientific and others sold "cold cameras" which
used a block of dry ice to chill the film and increase
sensitivity.  There was also a system of exposing the
film to vapors from hydrogen peroxide to increase the
sensitivity.  

Bob

- ----------
>From: Jon Hart <jonhart51  >
>To: rollei  us
>Subject: Re: [Rollei] Hyper-sensitizing
>Date: Mon, Jun 19, 2000, 10:27 AM
>

>Wasn't freezing the film in liquid gases used as
>well?

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