Photograph: Charles Benton

Aura Rosenberg, Untitled (Versailles), 2012 Aura Rosenberg, “I Know It When I See It”Martos Gallery, through Mar 30The title refers to Supreme Court Justice Potter Stewart’s famous opinion on the nature of hard-core pornography, outlined in a landmark 1964 case. The remark is pertinent to this show, in which Rosenberg presents overpainted inkjet images of porn, as well as life-size impressions of couples (including the artist and her husband) who were dipped in white paint before having sex on queen-size pieces of black velvet.