Well, if I were to do this the right way; I would shoot the characters in front of a green screen and key them in.
I don’t have the facility to do that at this point.
Now, this is stop action; but I’m shooting fewer frames in order to speed up the process a bit. I don’t have hours to shoot frame by frame animation. So, I’m gonna snag the key posses and then fill in the gaps with this effect.
And yes, I realize that there is going to be extra work in post by doing it this way.