Excerpt: This mic does deliver better audio than the built in mic on my Nikon D5500. However, it's claim to "dramatically reduce" the autofocus noise in the video is just not true. It's a good mic for just over $, just be aware that you'll still hear your camera lens' autofocus.
Excerpt: Had a lot of high pitched background noise (hiss) on my D800. The in camera mic had less. May not be a problem with the mic per se. The D800 is a camera not a quality audio recorder. I might try another mic. Aside from the noise the sound quality was pretty good.
Works great on my Canon EOS Rebel t3i and t5i cameras
19 June 2015
Summary: Works great on my Canon EOS Rebel t3i and t5i cameras. The difference in recordings with and without it was night and day. Students used them to shoot propaganda commercials and the mics were truly necessary--just make sure the person recording isn't talking, too.