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I spent a little time tonight running audio tests with my new Audio-Technica wired lavalier mic plugged into my camera. I’m using a Canon T3i with the ATR3350 lavalier mic.
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After listening to the recordings of the AT lav mic and testing iMovie’s noise reduction, it doesn’t bode that well for the little, inexpensive lav (it’s about $25, so no harm done).
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While the lav mic sounds more full, it’s got a really high noise floor (lots of background hiss). Since I don’t care much for how iMovie handles its “reduce background noise” feature (it introduces a lot of weird artifacts; full of pumping audio, garbled sounds, and generally underwater-sounding audio), that’s not good. I may do a more full set of audio tests in the future; I’m not sure if this little mic is going to make the cut for my audio/video production needs.