I think you should have exposure timings of around 1-2 seconds. (since I have to get 12 sec exposures in f500 camera for ISO100 film at sunny conditions in order to get normal exposures) If you have to give many more seconds of exposures, then something obstructing, as suggested by Mr. Erickson or may be pinhole is smaller than you think it is. How did you calculate the pinhole size?
Achal Pashine Pediatric Immunology Center for Clinical Sciences Research, Room 2120 269 Campus Drive Stanford, CA 94305-5164 Tel: 1-650-498-7574 FAX: 1-650-498-6077 ----- Original Message ----- From: "callum moffat" <callum...@yahoo.com> To: <pinhole-discussion@p at ???????> Sent: Thursday, August 15, 2002 11:56 PM Subject: [pinhole-discussion] exposure problems > im having problems with exposure on a pinhole camera > that im using.it's made from a round sweet tin and has > a pinhole of approx 0.35-0.4 mm. Distance from pihole > to film is 95mm at its furthest point. > > with fast film (iso 400 ilford xp2) my suggested > exposure times should be reasonably short(in pinhole > terms) but i find that im having to give massive > exposures to gat a decent exposure even in bright > light > > ant ideas!!!! > > callum moffat,edinburgh,scotland > > __________________________________________________ > Do You Yahoo!? > HotJobs - Search Thousands of New Jobs > http://www.hotjobs.com > > _______________________________________________ > Post to the list as PLAIN TEXT only - no HTML > Pinhole-Discussion mailing list > Pinhole-Discussion@p at ??????? > unsubscribe or change your account at > http://www.???????/discussion/
