unobtrusive
 
ADJECTIVE:1. Not readily noticed or seen: inconspicuous. Idioms: having (or keeping) a low profile. 2. Not showy or obtrusive: quiet, restrained, subdued, tasteful.

Examples of unobtrusive:
The photographer was able to take a great number of candid pictures of the participants without being noticed by anyone. Even when she had to pose people, her style was to direct without getting in the way of the main event.

I had to look this up, had to make sure I knew what it meant. Clients have described me as such. I’ve got to say, I agree.I’ve been photographing my world since given my first camera at age eleven.