What's Real About the Photographic Experience?

Suggesting that photographer and subject "relationship" is central to the practice of photography confuses some people and strikes a note of agreement in others. As the photographer I've resolved to acknowledge my feelings as integral to my work. When I'm shooting a person or situation that resonates with some part of my culture, sense of beauty, social consciousness, prejudices, etc., I can't help but feel that there is an impact on my construction of any image that I create of the subject or situation. As a subject in a photographic relationship, I am aware of my self consciousness as I stand still to pose or as I move about and try to ignore the photographer at work. Do I modify my "normal" behavior in anticipation of being photographed; do my subjects do the same thing. How can my relationship with my subjects influence their presentation of self in their images?