Colors seem consistently bright and vivid, and I saw no signs of smearing or any chroma noise. Black levels also are deep and rich, and shadow detail appeared clear and appropriately dense. The film's Dolby Digital 5.1 soundtrack also seems terrific. The soundstage provides a wonderfully immersive experience. The surrounds contribute quite a lot of aural information and they do so naturally and convincingly.
Sound quality appears very good as well.
Effects are realistic and forceful, plus they lack any signs of distortion, while the score displays strong dynamic range with clear highs and some deep bass. All in all, it's a very fine soundtrack. Not surprisingly, both commentaries largely focus on the technical challenges of creating the film. For the visual effects track, that's almost exclusively the topic, while the other piece also gets into other creative and storytelling decisions. It's a pretty typical promotional program in which we see clips from the film interspersed with interview snippets and behind the scenes shots.