So, i'm looking at buy.com, the only two that will work with my Canon Optura 20 (only 3.5mm input stereo input for mic, no XLR)

So it's either the "Azden SGM-X Super-Cardioid Shotgun Camcorder Microphone" $106.68

or

"Audio Technica ATR-55 Camcorder Condenser Shotgun Microphone" $49.48

I'm going to make my own cheap boom with PVC!

I will be making some small clips (action, horror, etc)

Azden SGMX1 Shotgun Microphone seems like a great mic for $150 but it is XLR :(

A simple mini to XLR adapter cable will probaby adapt any XLR microphone you wish to use.

The only limit is that some cameras supply a small DC voltage to power electret microphones. Sometimes that can cause some noise in the microphone. In that case, a blocking capacitor will solve the problem. Markertek sells such an adapter cable.

Welcome, Johnny.

If you want a mic to fit onto your Optura, perhaps check with Canon. Canon should have one available for this model. Or is the mic for a "pole" only?

Johnny,

I'm in the same boat as you. I've used an ATR 55 before and they are rather noisy. I have my eye on the Azden SGM X. The specs suggest that it'll be quieter.

I've had the ATR-55 for about 1.5 years now, and have been very happy with it. For the $50 cost, it is a HUGE improvement over the built-in mic.