Hi Ali: I often connect my wired & wireless mics directly to my GH2. The quality of the resulting recording is surprisingly good. Is it “perfect”? No. But often it’s quite adequate for many prosumer & entry-level pro productions.
However, because you can _not_ monitor (using headphones) LIVE audio out of the GH2 itself while the camera is recording, it’s impossible to be absolutely sure the audio recording is OK until later when you play it back.
This isn’t a problem if what you’re shooting lends itself to carefully listening to the sound on _playback_ after each take, and doing a re-take if there was a sound problem (bad mic cable connection, hiss, buzz, wireless/cellphone interference, etc.).
But for a one-time event such as a wedding, it’s not a good idea to rely on recording w/o live audio monitoring! If something goes wrong with the sound during recording, you won’t know for sure until it’s too late.
So, as others have suggested, especially in this case, record using an external audio recorder (and monitor its recording with headphones), and sync the video to the audio in the edit. If you plan carefully, this can be pretty easy to do. Although the GH2’s internal sound quality is pretty good, most external audio recorders sound much better.
Or, another variation is to do both: Record the sound both in-camera and externally. That way the external recording can serve as a backup if something goes wrong with the in-camera recording.
Cheers.
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