I used my XT-1 to take pictures up close w/o subjects knowing quite a bit.
Here the camera was sitting on my knee with the lcd angled out where I could check the framing, while I talked to my father in law. I made fifty plus shots. This is one of the more still and less dramatic. If he knew, he never showed it.
This one was a guy soliciting contributions for some very worthy cause that escapes me at this point. I made 10 plus shots from waist level, checking the framing in the lcd tilted back. Not very flattering, but interesting how close you can get to people and take a candid photo.