Oh, that makes sense indeed.
So just for the case, if I have clear sky, I can effectively meter incidently the falling light just at the place I'm at and apply this metering considerations fo the actually photographed scene regardless of the distances involved, right ?
Now, if a part of the actual distant scene is covered by a shadow, what I can do is create a shadow of at least approximately similar density and incidently meter it to obtain the necessary exposure, right ?
This sounds very useful, especially for seascapes when a large part of the scene
might be a sea surface heavily reflecting...