It’s strange how purposely distorting your CG footage can make it look more realistic.
Lens dirt, lens distortion, motion blur, and lens flares are all examples of things we add to our VFX shots to replicate real life. Chromatic aberration is another element you can add to improve the realism of your work. Read more about it on Photography Life.
In this tutorial I cover using both the project file and the preset to achieve the RGB split. You can download the template on the Preset Marketplace.