A note: My photography tagline is "The Spastic Image". The late, great Dean Stone of Maryville-Alcoa Daily Times fame gave me that tagline. As I deal with Cerebral Palsy, and muscles with a mind of their own. He told me, this reflects the obstacles you must overcome, to get steady enough to get an image which satisfies you. I use improvised obstacles, and a zen like approach to harnessing my legs to be quiet enough to get a photo. Sometimes, I get lucky and get what I want.