How to create an invisibility effect?
What we're looking for is an effect like this one: https://www.youtube.com/watch?v=o4m3sfcwYSE at 0:06 until 0:10 Notice how her arms are still there and they're moving. This indicates that they shot the original and used some CG to replace her head and recreate(?) the background.
The reason why I put a '?' after recreate is because I assume they do that. I doubt that they make two shots in order for the background to be the same. That being said, what puzzles me is that they lighting will take a lot of time to work and look good and on top of all that, what program do I use to achieve this effect and more importantly, HOW do I achieve this effect.
Please give me more than 1 suggestion, as we want as many suggestions as possible.
Thank you in advance.