JEMC said: Let's not forget the Lens Flare effect... which is one of the most absurd things you can add intentionally as it doesn't happen in the real world. |
It happens in, well, lenses. I suppose the idea is that you're watching footage through a film camera, which also explains film grain, chromatic aberration, and motion blur.
DoF is a real thing due to Rayleigh scattering so I keep it on, though often in games it happens far closer than it does in real life since game environments are rarely that big.