Different levels of photography require different levels of understanding and skill. A "press the button, let George do the rest" photographer needs little or no technical knowledge of photography. A zone system photographer takes more responsibility. He visualizes before he presses the button, and afterwards calibrates for predictable print values.
Minor WhiteIf all your life means to you is water running over rocks, then photograph it, but I want to create something that would not have existed without me.
Minor White