Dave is here wrote: > > You dont need a camera shutter just a piece of black tape or a > card to cover the opening > Dave Balfour
Yep, true enough. At the time I was trusting the camera shutter, having long since forgotten it was untrustworthy. Anyway, I like things to make sense, and am glad to have an explanation that makes sense for the unpredictable results I was getting. Thanks everyone. Thanks, Katharine
