Simulating "The flash" effect by using the advanced lightning effect (and a lot of other effects as well) in After Effects. Then I finished the video doing some color correction in Premiere Pro. That was actually really fun to do, if you ask me!

      Below, there are some photos from the same frame, but showing the progress of this effect:

         1 - Frame from video shot direct from the camera.

        2 - Frame from video shot with the effects.