I know they make shotgun m

I know they make shotgun mics with 1/8″ plugs since I have one, but it’s a cheapy and certainly not professional.

If you just want fair audio quality, I’d just use the microphone that’s part of the camera.

If you want to do interviews, I’d get a “good” microphone and an adapter like Rob says – I’ve got that setup also.

I usually video from a tripod and the adapter attaches easily to the tripod.

Go to http://www.bhphotovideo.com and search for “shotgun” they have all sorts of good shotgun microphones.