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Re: [APML] Speeding up film with cold weather

To: astro-photo@seds.org
Subject: Re: [APML] Speeding up film with cold weather
From: Jerry Lodriguss <jml@astropix.com>
Date: Sun, 03 Nov 2002 17:16:23 -0500
In-Reply-To: <20021103213956.92285.qmail@web14301.mail.yahoo.com>
References: <03ee01c28365$4c3236d0$6464a8c0@astrophoto.ca>
Reply-To: astro-photo@seds.org
Sender: owner-astro-photo@seds.org


>I wonder about Supra 400. This film has little
>reciprocity failure that I've noticed. Up to 5 1/2
>hours so far at f/10.


Alan,

If you are going 330 minutes at f/10, then it sounds like the film does 
have reciprocity failure, otherwise you would be overexposed at that exposure.

Jerry

Astronomical photography: http://www.astropix.com




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Follow-Ups:
- Re: [APML] Speeding up film with cold weather
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References:
- Re: [APML] Speeding up film with cold weather
  - From: "John C. Mirtle" <jmirtle@shaw.ca>
- Re: [APML] Speeding up film with cold weather
  - From: Alan Voetsch <critter12952@yahoo.com>

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