100% Zones system with spot metering is what you did before the advent of live histograms. Digital flips the bias from overexpose to underexpose and the respons

100% Zones system with spot metering is what you did before the advent of live histograms. Digital flips the bias from overexpose to underexpose and the response is far more linear than film was. That said its good to have learned these concepts and have them in mind as it makes you a better shooter even in an auto-everything digital photo world. For example understanding the gray level the camera meter is averaging for and how that impacts the exposure compensation if you are shooting say a bright white snow scene vs a dark blacks & grays street scene.