David: I think you will find that you will get pretty respectable results with the Silette. I have one, and it performs pretty well. So long as the shutter speeds are close to accurate, you'll have no proble. You can even use the sunny-16 rule and do alright with this camera.
http://insects.ummz.lsa.umich.edu/~mfobrien/ansco.html

Cheers,

Mark