[pinhole-dicussion] reciprocal failure

hi
i've got an Zero Image pinhole camera
and i've got a question concerning sth called 'reciprocal failure'.
In a instruction added to a camera it's written
that it means that i need to multiply the speed by 2 when it's 1-2seconds,
by 4 when it's 2-4...by 12 when it's more then 10 or sth like this. anyway
it's written in a very simplified way so i'd like to know some details. the
aperture in this camera is 138.
thanks.
karl

----------------------------------------------------------------------
Portal INTERIA.PL zaprasza... >>> http://link.interia.pl/f167c
Received on Sat Nov 23 09:08:50 2002