If you are walking down the street, camera in your hand, loaded and ready to shoot. You see a person falling from a high building, either having fallen or jumped. That person is falling through space. You don't shoot that photograph unless the theme you are working on has to do with the effects of space on the human figure. If you simply photograph that event because it is an event that is happening, you're doing photojournalism.
Leonard NimoyFor a period of time, I carried cameras with me wherever I went, and then I realized that my interest in photography was turning toward the conceptual. So I wasn't carrying around cameras shooting stuff, I was developing concepts about what I wanted to shoot. And then I'd get the camera angle and do the job
Leonard Nimoy