Keying main actors - sizzling edges!

This weekend saw my attempts at keying the main actors for the scientists scene. Despite an even lit green screen, after reading several blogs it appears my green was not bright enough. When trying to key I am being plagued with what's known as sizzling edges.

I have tried Keylight in FCP and this produces slightly better results but as its all HD it is still quite noticeable. Trying different methods in Shake as it is quicker to see the results; plus it looks like it is going to take several keys on different parts to get acceptable results.

This means a key for the head and a key for the body. It may also mean using Primatte for the edges and Keylight for the hold out matte and use if trackers.

More research needed and extra tests - maybe worth buying the latest Keylight for Shake £450+vat... Lets see how we get on first!! Will try an hour a night this week.