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

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Received on Fri Aug 16 02:53:20 2002