Index contour rendering components of, 188 described, 188­196 fundamental concepts of, 188 Contour Store Function (contour) shader, selecting, 189 contrast ambient occlusion for, 86­87 lack of, 29 contrast levels, balancing, 11­12 Control Parameters rollout, Time area of the Motion panel, 67­68, 68f coordinate systems based on a datum or origin point, 225 problems caused by, 228­230 Coordinates rollout, 101, 101f Copy (Instance) Map dialog, Swap radio button, 114, 115f cost, balancing with quality, 176 Crop Auto Region Selected option, 155, 155f Crop option, in the Area to Render drop-down list, 27, 27f Curve Editor. See Track View-Curve Editor Curve shape, flattening, 82, 82f default presets, for 3ds Max, 2 DefaultOutputShader (Glare) button, 181 depth, in an image, 29 Depth of field (mental ray) effect described, 183­187 in the real world, 186­187 selecting, 186 using, 183­184 diagnostic rendering, for final gather, 18, 21f diagonal lines, forcing stronger in an image, 232­235, 234f Diffuse area, of the Main Material Parameters rollout, 121 Diffuse Color (Speckle) map, 114, 114f Diffuse Coloring rollout, 89, 90f diffuse light. See bounced light direct illumination, street scene with, 16, 17f direct light calculating, 6 described, 6 interior scene with, 32­33, 33f displacement, in a wake, 159 displacement mapping, adding a wake, 150