Do you have any tips on how to take pictures of people in their natural state without them posing or acting in conscious knowledge of being photographed? I've been shooting for a while and its only recently that I've transitioned from photographing landscape and architecture to really focusing on shooting people. It has been a tough transition, because inlike the first two, people tend to want to tense up or pose or smile awkwardly when they know that they're being photographed. I know there's a Chase Jarvis or two floating around here, do you guys have any tips? I tend to shoot with cropped nikons using 30mm primes or 40 mm macro primes.