mental ray Architectural and Design Visualization Shader Library
mental ray Architectural and Design Visualization Shader Library
mental ray Architectural and Design Visualization Shader Library
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
4.1 Tone Mapping 97A transparency of 0.5 in the portal lightNow the objects outdoors are visible, while maintaining the contrast indoors. The light levelindoors hasn’t changed <strong>and</strong> still follows the real world values (unlike if we had put actual darkglass into the window, which would have attenuated the incoming light as well).Now this is a mid day scene. What if we change the time of day <strong>and</strong> put the sun lower on thehorizon? The scene will be much darker, <strong>and</strong> we can compensate by changing the exposure:7 PM With shutter 1/2 secondKeeping the same settings (left) with the new sun angle makes a very dark image. On theright, all we changed was the shutter time to 2 (half a second). This image has a bit of ayellow cast due to the reddish sunlight, as well as the yellowish inc<strong>and</strong>escent lighting. Tocompensate, we set the white-point to a yellowish color: