Green Screen

This is a project that I did awhile back. I started by keying the original plate:

Original Plate

Original Plate Keyed.

Then I created the CG background which I rendered with the Cycles render engine:

Unrendered CG background

Rendered CG background

I then rendered a couple of smoke passes:

Background Smoke

Foreground smoke

After combining all those passes I graded the entire scene to get the final shot.

Final graded shot.