Aug
Always have a camera with you.
Obviously, you can’t take pictures without a camera. If you have a pro-level dSLR with a huge telezoom, you might prefer a smaller and more portable camera which you can carry in your pocket while staking out the streets.
Act Natural!
You don’t want people to mistake you for a pervert or paparazzi. Act natural and confident. You will be treated according to how you behave.
If you’re half hiding behind a wall and sniping away or trying to conceal your camera behind newspapers or magazines, you will be treated with suspicion and possibly confronted.
Just keep your camera out in the open and photograph confidently. People are more likely to ignore you as they assume that you are doing what you are supposed to be doing.
Remove the Frills.
Pare down your gear into the bare essentials. Dump the heavy accessories like battery/power/booster packs. And toss out your external flash. It is going to be distracting when taking street pics.
A flash would destroy the ambient lighting and and also interrupt that subject, destroying any natural pics in the process. . You should be thinking portability and ease of access over power.

