Weston spent the greatest part of his towering career setting a standard of photographic portraiture. Included are images of Diego Rivera, Frida Kahlo, Tina Modotti, and James Cagney. Together these photographs create a powerful volume that demands a fresh look at this central endeavor of his life's work. Weston spent the greatest part of his towering career setting a standard of photographic portraiture. Included are images of Diego Rivera, Frida Kahlo, Tina Modotti, and James Cagney. Together these photographs create a powerful volume that demands a fresh look at this central endeavor of his life's work.