A start would probably be to key the guy on the desired BG, then
add the flashlight using the screen blending mode on the
composite. Then it all depends if you need to track the flash
light on the candle or not.

On Tue, May 8, 2012, at 12:34, nelpiper wrote:

I can't send frames cause I'm not allowed to, I'm sorry.
Let me try a better explanation.
There's shot of a guy walking in a forest holding a candle,
that's a greenscreen shot. Another shot is a effects guy shinning
a flash light to simulate the luminance value coming from the
candle. The effects guy is in a dark room shinning the flash
light. I'm not sure the best approach to merge these two shots.
I hope it's better now.
Thanks for the patience.

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-- 
  Hugo Léveillé
  TD Compositing, Vision Globale
  [email protected]

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