Difference between the drop down options like "High" to "Low" in "Scene Editor" - "Environment" tab - "Lighting Image Blur" setting.
Solution
In advanced studio display (NX graphics windows), you will not see much difference when render setting is set to preview render (NOTE: Toggle setting might be hidden by default).
This is full render with low blur setting
Below is high setting, you can see some differences with diffusion on the flat surface of the block and how the lighting is "softer" on the top of the sphere.
Another example which might be more pronounced…
I set this one to none
This one I set to high… so you get more blurred light dispersion
Hardware/Software Configuration
Platform: INTEL
OS: windows
OS Version: 1064
Product: NX
Application: SYSENG
Version: V12.0.2
Function: VISUALIZATION
Ref: 002-8016468