Hmmmm, I'm confused. (Maybe it's because I haven't had coffee yet this morning.

) There are folks that use manual focus lenses (eg. micro lens) with their electronic SLRs and dSLRs. They get their exposure reading using their camera then manually set the shutterspeed on the camera and aperture on the lens. This is why I'm confused about your setup and you not being able to do something similar.
As for exposure selection in general, "sunny 16" etc., remember that the settings will vary according to the ISO value you have selected on your camera. Same goes with film. Exposure will vary according to the ASA value of the film you use.
To learn about "sunny 16", take a peak at
http://www.camerareview.com/templates/sunny16.cfm . It's a brief instruction that may be helpful to you if you are not going to be using a light meter or camera exposure metering mode.