Sotheby’s Photographs auctions in London, New York and Paris achieved remarkable results this year. 2018’s top lot was Aleksandr Rodchenko’s Girl with a Leica, which set a new auction record for the artist. Photographer Michael Dweck, whose diverse body of work was celebrated in a special selling exhibition at Sotheby’s, also saw an artist record. Ahead, discover some of the year’s most valuable photographs.