PAINTERS The most innovative art can come from the most venerable of techniques. In the case of British husband-and-wife team Rob and Nick Carter, it started with a photographic method first developed in 1834.
The Carters did not begin as boundary breakers, artistic or otherwise. Rob, 39, trained as an advertising photographer; Nick, 38, studied painting and fine arts. They met in school when they were both 16, married a decade later and might have expected a traditional life in traditional fields. But then they started fooling around with light and color.
They began their collaborations modestly: Rob would take photographs...