RE: Help Me Pick A Color Film

Jeff

For anything longer than 2 seconds (not 5 seconds as I previously wrote)
Fuji say simply 'Not Recommended'. So I use the following reciprocity
table, which I tend to use for B/W films, too.

Indicated exposure Multiply by Final exposure
1 second x1.25 1.25 seconds
5 seconds x1.5 7.5 seconds
15 seconds x2 30 seconds
45 seconds x2.5 1 min 52 sec
2 minutes x3 6 minutes
5 minutes x4 20 minutes
10 minutes x5 50 minutes
20 minutes x6 2 hours
40 minutes x8 5.5 hours

So you can see that by working back from my 16 minute exposure, the
original exposure indicated by my Pentax Spot meter was 4 minutes (at f/256
on my home-made 90mm focal length 4 x 5in pinhole camera).

Regards
Derek

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From: INTERNET:pinhole-discussion@pinhole.com
Sent: 03 August 2001 18:12
To: "'INTERNET:pinhole-discussion@pinhole.com'"
Subject: RE: [pinhole-discussion] Help Me Pick A Color Film

Thanks Derek!

Have you come up with your own reciprocity adjustments,
or are you using what the manufacturer suggests?

-Jeff
Received on Sat Aug 4 06:35:18 2001