What a spy gadget? I love this very much but I don't have the chance to use it, at least, for now. I have no D-SLR camera ! Now we have "Super-Secret Spy Lens" to capture photo without permission from others.
"People have a sixth sense for knowing when someone's taking their photo". I totally agree with this ! Some people are just so stubborn, don't allow people take even a picture of him/her. I wonder why some people just don't like to take picture, although the one is physically perfect.
With this on hard, you can snap anything you want, don't be too obvious anyway...
The spy lens ~ I believe you understand how it work