Originally Posted by Bill Burk
On my Zone Sticker for the Master II, the Zone 0 through III are all "black" basically. But only IX is "white". The Zones VIII through IV do all the work. Everything below plunges into shadow.
Maybe the reason compression in the shadow Zones works is that people are not looking in the shadows, their eyes gravitate to the lighter tones.
It's subjective tone reproduction. As long as the mid-tone gradient is higher than 1.10, people can accept highlight and shadow compression.