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 ---------- From: INTERNET:pinhole-discussion@p at ??????? Sent: 03 August 2001 18:12 To: "'INTERNET:pinhole-discussion@p at ???????'" 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
