French-Brazilian photographer Sebastião Salgado came to the attention of director Wim Wenders (Buena Vista Social Club, Pina) through a photograph of a blind Malian woman. Her face partly shrouded by a head covering, her exposed eye looks like a faceted jewel—not ugly, but strange and beautiful. In his narration, Wenders, who bought a print, says it still moves him deeply. That exchange led to a friendship, which led to this Oscar-nominated documentary. Wenders and codirector Juliano Salgado, Sebastião’s son, track his career from social photography to nature photography in an uncritical portrait filled with majestic, painterly images…