Quote Originally Posted by Pinholemaster View Post
It is not about strength, but more about breath control and a smooth release of the shutter, not a jab.
Quote Originally Posted by bobwysiwyg View Post
I've done some competitive shooting (rifle) and you do hold your breath, but just momentarily to squeeze off the shot. Inhaling and exhaling expands/contracts lungs and transfers movement to weapon via your arms or shoulders. I would think the same thing can happen with a camera. I've always held mine for an instant when tripping the shutter if the camera is hand held.
What they said.