Advanced Power Window and Qualifying Techniques

Hi there,

I'm running into an issue with some footage where the client wants to change the color of the background and boost the exposure.

Here's where the issues come in, there is a model in front of this background and she's applying face cream. So her hands and face are moving all about. Plus theres a shadow of a palm leaf that is on the background and it sometimes crosses her face.

It's a very difficult shot to qualify, and track with a power window. Maybe it's not entirely possible given the footage we're dealing with. Regardless I was wondering if anyone had any tips, or knows of a good tutorial that teaches more advanced techniques using qualifiers, power windows, and mixer nodes in conjunction to try and conquer some of this more complicated requests.

It would help to see the picture. And then, there are some situations you can't handle with DR alone. Specialised tools for this are Mocha and Silhouette, but they don't come cheap. There might be a time-limited demo, though.