Doesn't work with my Canon T2i. Strangely this works with my Mac (garageband). But it's about being able to connect directly to the camera to avoid syncing later. I tested it when I first got it on my computer. Should have tested the camera before the return date. Since it works with the computer when (microphone) toggles to 'smartphone/off' instead of 'camera', I'm hoping I might just have caught a dead battery device. I will update. Alright, here's an update. I got a new battery and it works great now.