Cornelia Hediger's photographs are meticulously staged and impeccable: Her characters are stylishly prim; her lighting is soft but it pops. In her latest show, "Doppelganger," on view at Klompching Gallery in Dumbo through October 31, she exhibits her budding genius for alluring telenovelas, starring an eternally confused young chica and her eternally spooky doppelgänger. There are also several lewd scenarios, one of them involving an aroused fish.