A friend of mine have the same flat panel iMac models. We also have the same TRV-103 Sony camcorders. using with iMovie 1 neither of us had any problem. Using with iMovie 2 I had no problems but his would cut out after 5 min of play or rec. No test yet with iMovie 3. Just kind of weird how we could get different results from the same models of hardware. beware if buy something NOT on the compatibility list. Compatibility could be iffy. -Preston