Alf Kumalo, a celebrated South African photographer, died Sunday of prostate cancer in Soweto. He was 82. Here, he is seen in April outside the Magistrate Court in Johannesburg, while pursuing a hate speech case against a white man he accused of attacking him with a racial slur. Themba Hadebe/AP hide caption

itoggle caption Themba Hadebe/AP

The photos in his series Congo Democratic "trace some aspects of the individuals and institutions that have been in power in the Congo," writes photographer Guy Tillim. Here, presidential candidate Jean-Pierre Bemba enters a stadium in central Kinshasa flanked by his bodyguards during an election rally. Guy Tillim/Courtesy of Prix Pictet hide caption

itoggle caption Guy Tillim/Courtesy of Prix Pictet

Winner - Behavior: Cold-blooded Animals - A yacare caiman waits for fish to come within snapping reach in the shallow, murky waters of Brazil's Pantanal - the biggest wetland in the world. Caimans can grow to be three meters in length. Luciano Candisani/Veolia Environnement Wildlife Photographer of the Year 2012 hide caption

itoggle caption Luciano Candisani/Veolia Environnement Wildlife Photographer of the Year 2012

Torukun, the eldest daughter of the Kuruman family (third from right), with her father, mother-in-law, sister-in-law and nephews, poses for a photograph outside her house. Torukun raises cattle and lives in a village away from her parents. Go Takayama hide caption

itoggle caption Go Takayama

Reporter Ashley Parker transmitted these two different views of the campaign trail via Instagram. In the photo on the left, Mitt and Ann Romney stroll on the beach. On the right, the media pool chases after them. Courtesy of Ashley Parker/The New York Times hide caption

itoggle caption Courtesy of Ashley Parker/The New York Times

That's Bananas: "Whether [Josephine Baker's] getting a pedicure or she's walking down the street or she's relaxing in a yard somewhere, I just love the variety of pictures of her," Gainer says. "The banana skirt is a part of who she was, it's the most famous thing, but it just annoys me when that's just the only thing. ... There was a lot more to her than that." Michael Ochs Archives/Getty Images hide caption

itoggle caption Michael Ochs Archives/Getty Images