Bokeh not bokey.........
https://en.wikipedia.org/wiki/Bokeh
"That's what its all about!"
Bokeh is a naturally occurring artefact that comes from out of focus light hitting the lens. The only way to get rid of it is to either re-frame your footage to avoid the light source or put your subject in the same focal plane (parallel distance from camera).
Portrait mode on the other hand, tries to simulate this.
Bokeh are circular, I think it's more than just the blur.
Bokeh are circular, I think it's more than just the blur.