Stockholm, may 2011

Last weekend, I had time to get a few shots, and they are what you're getting now.

Here's another. This image wouldn't suffer from a bit more sharpness. I wonder to what extent I could walk up to people and request a portrait, thus getting to use a lens more suited for portraits, like my 50mm...
Anyone with experience of trying to get a picture of a stranger? And, furthermore, I really don't want them to be concious about me.