Martin Munkacsi: White Borzoi, 1929 (Hungary). Perhaps the best photo of a borzoi ever. For more about Munkacsi, I'm just going to straight-up crib what I wrote when I saw the fabulous exhibition of his photographs Think While You Shoot! at SFMOMA two years ago:
This is one of those shows that's going to inspire me for weeks to come. Munkacsi was the forerunner of Avedon and Cartier-Bresson and made his name shooting photographs for magazines, and until recently he had pretty much been forgotten. He had an incredible ability to capture slices of life in his pictures, and also did some amazing celebrity and fashion work. He was the master of the action shot, and was even the first photographer to bring movement into fashion photography when he shot a model running down a beach for Harper's Bazaar. His compositions are all modernist angles, the work of someone with a knack for fresh perspective and for anticipating the moment he wants to capture on film.