Боюсь, ровно такое же, как на остальных видео того лайва. Вот цветокоррекция точно отличается - каждый трек монтировался разными людьми, и цвет делали все на свой вкус.
@lowfreqosc that's why you use an external audio recorder, especially to make sure your audio levels are correct, because if you plug just a mic into the 7d or something else, you have no clue if the mic is being too loud or not until you play it back and hear it clipping or something. A zoom h4n is a pro's choice audio recorder.
Look at all the videos on Vimeo with the T1i/500d, the 5d, 7d, gh1, etc. Everyone is using them for short films and even commercials. If you are worried about audio get the Zoom H2 Ultra Mic. It's about as expensive as a cheap external video mic you would need anyway.