Though he’s mostly known as a photographer (and occasional sculptor), Arthur Ou tries his hands at painting in his first show with Brennan & Griffin. Ou’s use of enamel, silver halide, acrylic and dirt give his abstract works-six side-by-side pairs of canvases-a mysteriously textured, shimmery look like the surface of lake at dusk, or a windowpane dusted with frost. For a taste of his photography, there’s a thick binder on a wood picnic table full of contact prints Ou made over the last year.