How to use Bloom and Glare?

In Corona, all post processing options, including bloom and glare, can be adjusted in real time during and after rendering. This applies to both regular and interactive rendering.

Bloom and Glare can be controlled in the same places as scene exposure:

  • In Render Settings > Camera / Exposure / Tone mapping
  • In C4D Picture Viewer > Corona > Post process...
  • In Corona VFB > Post tab
  • In current camera > Corona Camera Tag

Bloom creates a large, soft glow around bright areas in the image, ideal for adding softness to windows as an example, or giving a soft glow around a candle flame. Hue Power and Shift let you adjust the hue of the effect rather than have it purely dependent on the color of the light source.

Bloom and glare disabled - click to enlarge

Bloom enabled - click to enlarge

Glare creates a sharper, more-focused glow with rays from bright areas in the image. This is ideal for creating a “starburst” effect around bright highlights on cars, from bright light sources, on gemstones, etc. The Hue Power and Shift parameters affect Glare in the same way as Bloom.

Bloom and glare disabled - click to enlarge

Glare enabled - click to enlarge

Bloom and Glare

Various examples of bloom and glare used together:

Bloom and Glare with Multi-Pass

To enable Bloom and Glare on multipass elements such as the LightMix, ensure that the Bloom and Glare options are checked for that multipass element:


NOTE: At the date of writing (21st Sept 2017) the separate Bloom and Glare multipass render element is non-functional and will always show as black. This will be updated in a future release.