Multiple Pinholes

What is the best way to figure the approx time when using more than one
pinhole. There are a lot of variables as to placement of pinholes and
sizes, etc., but what is a good starting point to experiment. Would it
be best to come up with a total opening and figure time from this or to
figure time for one pinhole and then divide this by the number of
pinholes used.
Received on Sun Mar 25 05:02:47 2001