From: Perception of light source distance from shading patterns Journal of Vision. 2016;16(3):9. doi:10.1167/16.3.9 Figure Legend: A subject's view of the task of Experiment 2 for a rough glossy test object at 16 units distance. The task was to change the light source distance in the left image such that it matched the distance in the right image. The left image always showed an object with intermediate roughness, with the same reflectance and illumination direction as the right one but using a different random seed for the texture, preventing an exact image match. Date of download: 11/14/2017 The Association for Research in Vision and Ophthalmology Copyright © 2017. All rights reserved.