The images we sell in Screensavers generally use the rules we present here. Contray to common habit, the subject shoujld not be dead center in the photography. We like to have the subject looking into or moving into the picture. This rule also helps us position the skyline. This gives the impression of the subject dominating the image, not the image dominating the subject.
Cameras balance the shutter speed with the proper depth of field for proper film exposure.
The slower the shutter speed, the greater the depth of field or amount of the picture that will be in focus. More depth of field can also be obtained by backing away from the subject. By including foreground in the photo, not just the subjects feet, the viewer can imagine themselves being there. Most people do not like the feeling of looking over a cliff that occurs when your photo starts at the edge of the Grand Canyon and it does not have any foreground or area for the viewer to imagine they are standing on. It can leave an unsettling feeling.