I admire people who can take good candid street portraits. It is not my strong point, but I have been trying to learn. In general, I don’t think people like the idea of a stranger taking their picture, and my own desire not to get caught limited my abilities. This resulted in a lot of pictures of the backs of peoples heads, although sometimes you get lucky and people turn just enough to show their faces.
But I was really not content with just sneaking up on people, and I had to overcome the fear of being caught.
It takes a lot of patience, and a quick finger, because people who are not aware you are taking a picture will make unexpected and quick movements.
I may not be great at it yet, but I think I am getting the hang of it.