Josef Koudelka

The lesson: give a subject years, not an afternoon. Koudelka photographed the Soviet invasion of Prague in 1968 and published those pictures under the initials P.P., for Prague Photographer, to protect his family from reprisals. His first book, Gypsies, came out in 1975 after years of living for weeks at a time with Roma communities, and Exiles followed in 1988. His frames are dense with dramatic black-and-white contrast, figures placed at the edges and wide empty ground between them, and they reward slow study more than almost anyone else here. For a beginner, the takeaway is simple: pick one place or group you can return to again and again, and let the pictures deepen as you are trusted more.