Range: 0 ~ .0872
This setting allows the High Dynamic-Range Images in your scene to blurred slightly. This is a handy feature for softening reflections of the environment in reflective materials. Any part of the background that is visible will also be blurred. A setting of 0 will provide the sharpest reflections and background while a maximum setting of .0872 will cause the most blurring. For convenience, any setting entered that is greater than the maximum of .0872 will be replaced by .0872. If you want the maximum setting simply type a 1 into the input field rather than typing .0872.
The images below demonstrate an Angle setting of 0 and .0872.
The example images were rendered from the Isometric_SW view using the "Stark" Cubical Map and "Quality" Luminance presets.