So, just to make sure I understand....
Take my incident meter and get a reading from the gravel road with the dome facing the camera... Then underexpose by one stop to push the road into the next darker Zone (IV)?
Here's a hypothetical: The film I'm using has a latitude of 4 stops (or so I've been told). If I meter off the road and then the sky with a spot meter, and there's about a 2 stop difference between the both of them, would the sky be clipped out (assuming I'm exposing for the road)? Or does that range mean the sky must be 4 stops brighter (not 2) in order blow out of range?
I'll do some tests with the blue filter.
Thanks a lot! This is really superb advice!