Go to this thread.
I put together a detailed explanation of exposure from the average daylight/sunlight illuminance, to the original subject, to the exposure meter, to the camera exposure, to it's placement on the film, and how it works with film speed.
I've since made it into a pdf file, but it's too large to upload here. I'll be happy to email it to anyone interested.
I've attached a sample page.
Last edited by Stephen Benskin; 09-11-2011 at 06:21 PM. Click to view previous post history.