First and foremost, this blog is about candid photography. If you ask the subject for permission, no matter how you do it, the person has time to get ready for the picture. The photographer can get an interesting and excellent artistic result, but this cannot be considered candid.
If you’re worried about privacy invasion, law-breaking, possible confrontation, or other problems, don’t do candid photography. There is no other solution. It is the same as driving a car or traveling. You can get a ticket, be mugged or just get into a bad accident. Photographers have to use common sense and accept the risks.
After you’ve made your shot, please, feel free to talk, ask permission, and give business cards or anything else to resolve a possible conflict.
Sometimes you can be pleasantly surprised from your “victim’s” positive reaction.
These pictures illustrate another point. Even a person, obviously seeing a lens directed at him, creates genuine expression of confusion. This interesting case deserves a separate topic.