Thanks Avenger. Being right handed I take pictures with my left hand, so my right hand is on the stick.
I tried to control the stick with my left hand and take pictures with the right hand but after I landed , someone ask me if I was having control problems, he said the plane was flying in an akward position. Maybe is a matter of practice, learn to fly the plane left handed. Anyhow I have to cross my arm to the opposite window in order to take pictures.
Loosen the belt will definately simplify the process. I fly without a helmet which is probably not a very good idea.