So it’s lots of different areas of technology within Weta that put all that together. Well, the Subsurface technology itself, was actually Ken McGaugh and Joe Letteri who did the majority of the work for that, and they basically took a concept paper that had been written and implemented the math and the information in the paper into a shader-based system, so that we could put it onto the skin of Gollum. What was the process of creating that technology like?
It’s different implementations of it, but it’s the same basic concept that was back on Gollum. It spreads the light as it goes through the surface so you get that skin-like feel. It’s basically like, if you light a wax candle, you see the diffusion of the light through it. Yeah, it’s called Subsurface and we actually got an Oscar for that technology. That was something that had never been done before. I remember reading that the reflection of light on and under Gollum’s skin and the way you could see his veins was one of the biggest innovations that you guys pioneered. Because he was so skinny, you saw all of the muscles moving under his skin. And because we were inventing technology as we were doing it, it was a huge challenge. Up to that point, you’d seen a lot of CG creatures, but none to the level of Gollum, where the detail him an actor on screen, rather than just a scary monster, which is what a lot of the CG creatures up to that point had been. If it happened more than once to one person they had to wonder why the actor was seemingly always dropping things and then having to look for them on the ground.Eric Saindon: When we did Gollum, no one had really done a CG creature mixed with live action that you were supposed to believe was just a creature in the scene. One can only imagine wandering around the production of the film, or just a random place in New Zealand, and discovering Andy Serkis crawling around on all fours. I did occasionally come into contact with other people, so I just had to pretend I was looking for something. I spent a lot of time in preparation for that I would go off for walks on all fours for hours. I used to walk on all fours off set when we were filming Lord of the Rings. This apparently got slightly awkward when he would run into other people while doing it. He recently told The Guardian that he actually went for walks this way to practice the movements. He uses his arms and legs to move around, and since his movements were going to be used to make Gollum real, Andy Serkis apparently spent quite a bit of time perfecting these movements.
Gollum doesn't walk like a person, but more like a gorilla.
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