The Octane Postprocessor attributes can be accessed in a Camera's Shape node under the Octane Camera rollout (figure 1).
Figure 1: The Octane post-processor settings in the Camera’s Attribute Editor
Octane Postprocessor Parameters
Activates post-processing effects. Post-processing is disabled by default.
Controls the size of the glow originating from an emitter and the size of the halo of light originating from the sun and/or concentrated light on reflective glossy materials (figure 2).
Figure 2: A comparison of two images with bloom power disabled (top) and enabled (bottom)
Controls the size of the visible rays originating from an emitter and the size of the glare originating from reflective glossy materials (figure 3).
Figure 3: Glare power creates a star patterened glare on bright light sources and reflections.
Glare ray count
Controls the number of visible rays radiated or reflected
Is used to adjust the direction of the glare relative to the object.
Controls the sharpness of the glare. Smaller values will result in a crisp linear glare and larger values with result in a softer glare (figure 4).
Figure 4: A render showing a blurred glare.
Is used to adjust intensity distribution of the rays across a source. This affects the strength or weakness (brightness) of the radiant energy.
Is used to adjust the displacement of the spectrum as the frequency of light emitted from a source changes. The shift is evident by a color change, similar to the Doppler Effect, as the distance traveled by the ray from its source increases or decreases (figure 5).
Figure 5: A render showing spectral shift.
Video Tutorial: Octane Post Process Effects