2009

Table Of Contents
In the next steps, you return to the Render Settings window and the Attribute
Editor to increase the quality attributes that affect the Global Illumination
effect.
To increase the Global Illumination quality settings
1 In the Render Settings window, click on the Indirect Lighting tab and
expand the Global Illumination section. Change the following Global
Illumination attributes to:
Accuracy: 900
Radius: 2.5
The Accuracy setting determines how many photons will be evaluated to
determine the Global Illumination intensity at a given sampling point.
Radius determines the size of the region surrounding the particular
sampling point. The more photons that get sampled, the more even the
Global Illumination will appear in the final image.
NOTE As you increase the Global Illumination related quality and photon
settings, the time to render the image also increases. Your goal should be to
increase these settings just enough to achieve the desired image quality,
without increasing them beyond what is required so that your rendering
times are not adversely affected.
2 In the Render View window, click the Redo Previous Render icon to render
the image.
3 When the image has completed rendering, click the Keep Image icon to
save the image and then compare this rendered image with the previously
rendered images.
452 | Chapter 9 Rendering