We only see what we look at. To look is an act of choice.
Photographs bear witness to a human choice being exercised in a given situation. A photograph is a result of the photographer's decision that it is worth recording that this particular event or this particular object has been seen. If everything that existed were continually being photographed, every photograph would become meaningless.
Without ethics man has no future. This is to say mankind without them cannot be itself. Ethics determine choices and actions and suggest difficult priorities.