SAYUNCLE VIDEOBLOGS. He emails that he’s using the Kodak Playsport. “Only complaint is the audio is a bit weak. But we were surrounded by 70,000 people.” Well, that’s a tough environment, though the Zi8 allows an external microphone. But with that much noise, you just have to get close, or go somewhere quieter. Fancier equipment — like the Sennheiser Evolution microphones we use for PJTV — can handle that background noise, but the microphone alone costs more than these miniature video cameras. (And don’t buy one thinking you can use it with the Zi8 — you can’t.) And SayUncle’s audio is entirely intelligible, though it could be a bit louder against the background noise.