Filters

The Filters rollout, accessible from the Rendering > Render Setup… > Settings tab, enables you to add bloom and glare effects to rendered images and to control Iray’s anti-aliasing mode.

• Bloom: use this post-process filter to approximate bloom/glare effects. This can be used to produce subtle enhancements, such as adding slight halos to emissive objects.
• Enable: toggles the Bloom filter on or off.
  • Size: determines the size of bloom effects, as a fraction of the output resolution.
  • Threshold: specifies the luminance threshold above which bloom effects will appear. When the Tone Mapper is enabled, this acts as a relative scale such that the 0 — 1 range maps to the black — white brightness range of the image. In this case, the default value of 0.9 only affects the brightest parts of the image.
    When the Tone Mapper is disabled, this instead acts as an absolute luminance scale in cd/m². In this case, the default value is appropriate for a scene lit with standard 3ds Max lights. For a scene lit with photometric lights, a value up to 100 may be required, whilst for a scene illuminated by an Iray+ Physical Sky system, a value above 50000 may be appropriate.
    ✱  Note: even with the Tone Mapper enabled, it may prove desirable to set a value greater than 1.0 if bright lights are visible in the scene.
    
    
  • Strength: controls the strength of bloom effects.
  
  
• Image (Antialias): use this filter to smooth out the effects of aliasing, to help reduce the appearance of jagged lines in the image.
• Mode: selects between three different smoothing filter shapes:
  • Box
  • Triangle
  • Gauss
• Size: specifies the size of the filter in pixels. A large value will reduce aliasing further but may lead to unsharp images. The minimum setting is 0.5.

See Also:

• Camera Effects
• Settings

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