My calculation from your figures is that the metered exposure would be 1752 times the exposure at f16. Using the "sunny 16" rule for exposure of TMax 100 film, the metered exposure for the pinhole exposure would then be 17.5 seconds, or something in the range of 30 seconds actual. ----- Original Message ----- From: <f...@cybernet.co.nz> To: <pinhole-discussion@p at ???????> Sent: Monday, January 15, 2001 4:06 AM Subject: [pinhole-discussion] Exposure incl. reciprocity
> Anyone had any experience on starting exposure time on bright > summer day using TMax100 10x8" sheet film. (Using Rollo Pyro) > Camera f/l = 600mm, p/h dia .9mm, approx f= 660, subject = sunlit > bush > Does 5min/10 min bracket sound in the ball-park? (Expensive!) > Thanks, > Warren > Warren Jones > MBE P350 Private Bag > Ponsonby Auckland > New Zealand > > _______________________________________________ > Pinhole-Discussion mailing list > Pinhole-Discussion@p at ??????? > unsubscribe or change your account at > http://www.p at ???????/discussion/ >
