Coma Implementation - Guillermo Algora - Visual Effects Compositor

Guillermo Algora
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COMA - IMPLEMENTATION
To implement Coma, we will build upon the setup from Spherical Aberration. This time, as we want the effect to "trail away" towards the periphery, we will incorporate a Transform Node into the setup and again apply a subframe workflow to its 'scale' value. The Expression is: ((frame % 1)*ScaleIncrease)+1  - substitute ScaleIncrease, which determines the amount of trail (for example, a small amount such as 0.05 might be sufficient).
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