Odd place for a camera and I don't like that it was either slightly hanging over the fence or just very close to it, but there's no doubt that that was a home run. I'm rooting against the Yankees as hard as anyone but even if I concede that the camera was hanging over the fence (and if it was it was only by a small, small amount), the baseball hit right in the middle of the lens and easily above the fence.
Besides, if the umps say that they made that rule, what reason do we have not to believe them? I hate the Yankees, I hate A-Rod, but that was homer.