Originally posted by osv from what i've read, fan ho used to set the scene up like you said, waiting for the light to be perfect, and then either shoot whoever happened to walk through the scene, or deliberately pose someone interesting in the shot, in just the right place.
he didn't have money for film and developing, so he had to get it right before he took the shot... for me, his use of light and shadow is pretty much unmatched in street photography, i don't think that anyone has ever done it any better, but other shooters were perhaps stronger in different ways.
1950s Hong Kong Street Life Captured By Fan Ho I've never heard of that guy but I really like his work!
The other main thing is to be observant. Observation is the key to good photography. It could be something curious, it could be something funny, it could be something interesting, but it just needs to be visually appealing as well.
Part of the problem with digital is that people get too snap happy and never think about what they are trying to do. In a lot of ways it's about self discipline. Personally half the time I pretend I have a film camera and only so many exposures. It makes me slow down, think about it, and try to capture something interesting.
But for sure especially in streets or whatever people and shadows are big elements. There are a million ways to approach it but all I know is that good light is good light and it will either make a good photo better or a bad photo suck more.
Observation of light and observation of people... then place that in context.