Richard Avedon transformed fashion photography, moving it from the placid “sitting” to the kinetic “shoot.” His black-and-white photographs for Alexey Brodovitch at Harper’s Bazaar and Alexander Liberman at Vogue pulse with life, his subjects laughing, chatting, playing as he catches their energy in motion. But Avedon also turned his lens elsewhere. In 1979, he began a five-year journey through 21 states, conducting more than 1,000 sittings that resulted in the series “In the American West.” Of its 126 images, 21 are now on view in London, in a show curated by his granddaughter, Caroline. —Elena Clavarino