File:HDR example-gauss blur.jpeg

Summary
A simple scene rendered using Radiance and using Paul Debevec's well-known "Uffizi" light probe.

Shown here is the same image blurred using two different methods. The first is an "LDR blur" performed in The GIMP on a tone-mapped "LDR" version of the image. The second is an "HDR blur" performed using the pgblur tool in Radiance on the original HDR image before being tone-mapped to an LDR image for display.