Francisco, it was a "getcha" shot from a friend of mine I took late at night while walking through a public park here. It was taken with a 24 mm and a Minolta SRT loaded with TMZ 3200 (impressive film).
I like to take portraits with such a wide angle lens (they aren't really candids as the lens is just in front of the subject's face). With some care and luck there's not too much distortion and you can get a lot of enviroment around the subject. Bad thing is that working at these distances from the subject the parallax error from an RF would be a serious problem...
BTW, I personally like a lot your second shot. The pose, the framing, even the grain coming from the I suppose severe cropping add character to the picture, so don't hesitate and print a big copy of it ! 🙂
I still find a bit difficult to take candids of unknown people, is there any trick to lose some shame ? 😛