PCShopTalk posted a review on the Azden SGM-X Shotgun Microphone

While many users use Standard or High-Definition camcorders for their vacation videos or perhaps for making some home-made movies, the onboard sound quality becomes noticeable to the user as they want to make more professional movies. The reason for this is because the onboard microphones tend to pick up background noises that lower the quality of your audio. Some cameras that use MiniDV tapes tend to pick up a small hum sound from the motor inside the camera itself. Whether you are aiming for just a home-made footage of your family and/or you just want to film your own little short, we highly recommend a shotgun microphone for all users that want to get the most out of their camera.

Azden SGM-X Shotgun Microphone Review