Jeff Wall, An Octopus, 1990. Silver dye bleach transparency in light box 71 5/8 x 90 3/16 in. (182 x 229 cm). Private collection, Courtesy Hauser & Wirth Zurich © Jeff Wall

Jeff Wall, An Octopus, 1990. Silver dye bleach transparency in light box 71 5/8 x 90 3/16 in. (182 x 229 cm). Private collection, Courtesy Hauser & Wirth Zurich © Jeff Wall