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 "Post" tab of the Corona VFB.






Bloom
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
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, Glare and Render Elements

Bloom and glare can be saved to their own render element - CShading_BloomGlare:




CShading_BloomGlare render element




CShading_Beauty and CShading_LightMix render elements can be created and saved with or without bloom and glare effects applied. 

It is also possible to toggle bloom only or glare only using the checkboxes in the CShading_Beauty, CShading_LightMix, and CShading_BloomGlare render element settings:


The checkboxes make it possible to apply bloom only, glare only, or both, to the selected render element.