Is Chromatic Abberation possible?

[Phantom]

It would be really cool if it is!

[Zappy]

With post-production, sure. Within Source FilmMaker, I'm not sure. Depending on what you want, you may be able to get the result you want by duplicating lights, offsetting them slightly from each other, and giving them different colours. But in many cases, you may need post-production.

[Marco Skoll]

As chromatic aberration is the result of different wavelengths of light focusing at different distances, the best method would be to render the scene three times with slightly different focal distances and then merge your final version in post production by taking one colour channel from each render, but that would obviously be time intensive and would require fairly decent software to compile a video rather than a still image.

There is a messy hack that could be used for approximating it in one pass, but I wouldn't particularly recommend doing it that way.

[episoder]

i can't rememeber if i did it in sfm, but you could try to code a postprocessing pixelshader using the screenspace_general shader and using an overlay of some sort.

[ficool2]

For anyone stumbling upon this with Google, a method to do this has been discovered (and the post above predicted this 7 years ago). This repo contains a chromatic abberation shader example

https://github.com/ficool2/sdk_screenspace_shaders