RE: Type 55 reciprocity adjustments

Howard

I think I was the member who gave the reciprocity figures for Type 55. Here
they are again:

I rate it at ISO 25 for the negative

Indicated exposure Correction factor Final exposure
        8 seconds 2x 16 seconds
        16 seconds 2.5x 40 seconds
        32 seconds 3x 96 seconds
        64 seconds 4x 256 seconds
        2 minutes 5x 10 minutes
        4 minutes 6x 24 minutes

Hope this helps.

Regards
Derek Watkins

-----Original Message-----
From: INTERNET:pinhole-discussion@pinhole.com
Sent: 20 February 2002 18:05
To: INTERNET:pinhole-discussion@pinhole.com
Subject: Type 55 reciprocity adjustments

Late last year a list member published a chart of reciprocity
adjustments with Type 55 Polaroid. I printed it out, lost it, and now
can't find it in the archives. Some interior work has taken me into
uncharted (to me) realms with this wonderful material. Help and thanks.
Howard Wells
Received on Thu Feb 21 12:29:34 2002