Re: [APML]: PJ400 preliminary test

["Mike Regish" <mregish@map.com>]

Mike Regish
http://members.tripod.com/~mike534
-----Original Message-----
From: Robin Casady <rcasady@CarmelCoast.com>
To: [APML] <astro-photo@nightsky.com>
Date: Wednesday, January 28, 1998 4:44 PM
Subject: Re: [APML]: PJ400 preliminary test



>
>I don't think you'll find much difference between 45 min. and 50 min. If
>you don't like full stop increments, you can always do half stops. Linear
>increments give you a decreasing difference between exposures as they get
>longer.

That would be how you can tell the reciprocity failure is starting to set
in.
>
>
>
>Robin Casady
>http://www.CarmelCoast.com/
>
>Casady & Greene, Inc.
>http://www.casadyg.com
>
>