In the late 60s, when the avant-garde sidelined painting for Minimalism, Performance and Conceptual art, Daniel Buren forged ahead with ‘painting’ that jettisoned aesthetic concerns. He hit on a formula that he’s used ever since, using vertical stripes 8.7cm in width in site specific installations that force reconsideration of their space. Petzel’s new 18th Street gallery space has barely had time to be considered (this is only the 2nd show there), but Buren’s work has never looked more attractive.