Atlanta-based artist Alberto Mier's idiosyncratic paintings of men and women put a conceptual spin on traditional portraiture and consider the genre's inadequacy in capturing the totality of human beings. Quiet, affecting and melancholy, Mier's paintings and drawings feature floating borders and inexact washes of color, creating a dreamy and tentative quality that sticks firmly in one's memory. Tues.-Wed., 1-6 p.m.; Thurs.-Sat., 11:30 a.m.-6 p.m. Through March 5. Krause Gallery, 291 Peters St. 404-522-6205. www.krausegallery.com.