In a clearing in a subtropical rain forest in northern Australia, you can watch the light dance as it filters through the rustling canopy. Below, the leaves of the bushes form an intricate pattern of shadows on the trunks of trees. A wallaby grazes in the open space. You raise your smartphone and aim it at the tranquil marsupial. Just as you tap the button to take its picture, the wallaby notices you and hops away. In the image on your screen, half of the snapshot is too dark to make out details, and the sky between the treetops looks bleached white. The hopping wallaby is a blurry, small blob near the center of the photograph. Zooming in on the animal exposes an almost Cubist field of pixels, his outline visibly broken up into the smallest squares of the camera's sensor.