Book excerpt: As photography grew as an art form, so did the technology that backed it up. In particular, lighting styles changed to reflect both the advancing technology and the changing social mores of each decade. As fashion and society changed, so did photography. Moving from the 1910s to the 1960s, Christopher Grey walks readers step-by-step through several shoots designed to emulate the lighting styles of each period, providing practical guidance as well as a history of portrait photography.