Autodesk 12812-051462-9011 User Guide 3 - Page 1498

setting to set the apparent illumination from these lights and the output pixel values based on the scene lighting. For example, with the default Physical Scale of 1500, a standard omni light is treated by the renderer as a photometric isotropic light of 1500 candelas. Physical Scale is also factored into the environment map and self-illumination. NOTE This value does not affect apparent illumination of the rendered scene with photometric lights. However, it does affect the apparent illumination cast by non-physical (standard) lights. For predictable results, illuminate the scene only with photometric or standard lights (not a mix), and use Physical Units or Unitless, respectively. Gamma/LUT Settings This group comprises text showing the status of the current Gamma/LUT settings, and a Setup button that opens the Preference Settings dialog to the Gamma and LUT panel on page 7758 so you can change the settings. Pseudo Color Exposure Control Rendering menu > Environment > Environment and Effects dialog > Environment panel > Exposure Control rollout > Choose Pseudo Color Exposure Control from the list. > Pseudo Color Exposure Control rollout Pseudo Color Exposure Control is actually a lighting analysis tool that provides you with an intuitive way of visualizing and evaluating the lighting levels in your scenes. It maps luminance on page 8029 or illuminance on page 8009 values to pseudo colors that show the brightness of the values being converted. From darkest to brightest, the rendering shows blue, cyan, green, yellow, orange, and red. (Alternatively, you can choose a grayscale where the brightest values are white, and the darkest are black.) The rendering includes the colored or grayscale spectrum bar as a legend for the image. After rendering the scene with pseudo color, 3ds Max displays a Rendered Frame Window on page 6073 labeled "Illuminance," with a legend of illuminance values below the rendered image. NOTE The Illuminance frame is not displayed if antialiasing is turned off. NOTE You can use the Pseudo Color exposure control with the mental ray renderer on page 6230. Exposure Controls | 6753