Folks, I have a quick question and hope you guys can help. I have a Nikon SLR camera, right now I am using it on a cheap Kodak tripod I picked up from circuit City years ago. I noticed when I am pressing the shutter-release button, I can see the camera shaking slightly from the viewfinder. I am guessing that is because of the built quality of the tripod that is causing the shake? What do you guys think? Thank!