Composition and individual expression
The decisions that the photographer must make are decisions that are made on the basis of feelings and emotions. Decisions that are aimed at expressing our emotional response to a scene, our perception of the subject we desire to photograph, and our personal artistic approach. All of these represent individual choices, choices that we are usually unaware of until we find ourselves in the act of capturing a specific subject with a lens and a camera. As such, this process prevents camera designers and software engineers to program either the hardware or the software to automatically express our response to the subject. They cannot program it any more than we can program it because both of us ignore what this response will be.
So what am I getting at in this explanation? I am getting at the fact that no matter how advanced and automaticized the equipment and the software we use becomes, there cannot be a substitute for individual input and expression.
What I am also getting at is the fact that the field of endeavor where this individual input is best expressed is the field of composition. Why? First, because composition is about personal choices: very few, if any, aspects of composition can be automaticized. Second, because composition is a field of endeavor composed of multiple facets and not just a set of rules. If it was just a set of rules it would be possible, theoretically, to think that these rules may be embedded in camera or computer software and that such software may have the ability to “compose” photographs on the basis of these rules, or the ability to give us directions aimed at helping us compose images in a specific way.