From: Lightness perception for surfaces moving through different illumination levels Journal of Vision. 2016;16(15):21. doi:10.1167/16.15.21 Figure Legend: Lightness matches in the free looking paradigm. (A) The graph depicts average reflectance and standard error for the chosen gray samples (gray circles with error-bars). The x-axis stands for experimental conditions, indicated by the icons on top and the labels on the bottom; the y-axis is measured reflectance. The three gray shades of the data points represent the three reflectance values of the target; the horizontal dashed lines represent the reflectance values used to render the target using the same shades of gray as the data points. (B) Average reflectance and standard error for the chosen gray samples (y-axis) as a function of the virtual surface reflectance (x-axis), for the four conditions (different symbols and colors). Date of download: 12/27/2017 The Association for Research in Vision and Ophthalmology Copyright © 2017. All rights reserved.