Quote Originally Posted by Kirk Keyes Last year, I was in Death
Valley, trying to take photos of patterns in the sand. I've got
one of those newer Minolta Flashmeter VIs that can do both
incident and reflected measurements. I used the spot meter while
there and some of the scenes were only about 3-4 stops
(reflected) between the darker and lighter portions of the
scene. Using Acros and Xtol, I was able to develop the film
enough to expand it out to where it prints well.  Today, I was
flipping through my copy of the BTZS book (3rd Ed.), and I
thought back to the Death Valley stuff. So I was looking for a
description of how to meter scenes of low contrast using BZTS.
Using an incident meter, it looks to me that the BZTS system
can't measure scenes that have SBR's less than 5. It also seems
that it can't differentiate between a 5 SBR scene and a 3 or 4
SBR scene.  I know you can determine development times for SBR
ranges this low, but how do you actually measure them with and
incident meter. Does photographer's