Like any photographer, Ethan Greenbaum asks that, first, we pay attention. When we drift through city streets on our way to work, or out to drinks with friends, or through a battery of galleries, we do it like distracted ghosts, only half present. Maybe we are in the thrall of the tractor beam glow of a smart phone, or we are thinking about a particularly delicious sandwich, or are gripped with anxiety about the shambolic state of the world. Whatever the case, we don't really look. We don't notice the way that cracks skitter across the surface of the sidewalk, overlook the way bricks are mortared, or tiles laid, or the way that elegant holes are jigsawed out of chipboard construction hoarding to accommodate unruly standpipes. Greenbaum has a keen eye for these lost swatches of the urban fabric, and he captures them with his camera.