I rewatched Freddy vs Jason and I am a bit on the curious side of things once again.
In the following viedo about Jason's attack on the party out bush, the obese man just sets Jason on fire, which in fact spreads out in the crops:
What I want to know is what sort of fire do they use, if they even use fire? If it is just CGI I would like to know. But how they film someone set on fire and not affected by it is what I am curious about.
Especially after the guy set Jason on fire with a torch and Jason just walked after him and killed him.
What effects and film techniques are used in order to maintain this particular aspect of the movie?