When you photograph people in the streets the background is important. I photographed this gentleman by putting him in relationship with this young lady sitting on the top left of the image. I closed the lens down to f4.5. I wanted her to be partially blurred in the image. This can be tricky sometimes. If you close too much down everything will be somehow in focus and if you open up too much you will get a too much blurred background. Sometimes it pays to try different f-stops for your composition.
Enjoy and keep on photographing!