It doesn’t take long to realize that if your shutter is open and you move while you are taking your picture, it might not be good. There was a saying years ago that you should not use a shutter speed slower than your lens’ focal length without a tripod. This means if you have 150mm lens, you should use a tripod for all shutter speeds slower than 125S.
they sell all sorts of devices that are like tripods but aren’t. There is the monopod, which is just 1 tripod leg. There is the cord you screw into your tripod mount and you step on it and pull up. The taunt line works pretty well. You can lean against something with a large mass, something you can’t move. I like using a tree or telephone pole. I lean against these things as an extension of my body. You can also hold the camera close to your “core” and exhale slowly.
I regularly shoot hand held without a cord or monopod, I just hold my body rigid and count for my exposure. the only movement is the beating of my heart.
I am currently working on slowing my heart rate.
