SamuraiBlue
Captain
You don't know what you are talking about. Depth of Field or focal depth as you wrote is a function of the aperture and distance of the photographer to the subject. Smaller lens aperture produces smaller DOF and smaller distance between the photographer to the subject also produces smaller DOF. DOF is also effected by the lens focal length and the size of the sensor. So there are many factors that can affect DOF, and it is certainly possible that a photo can have almost everything in view in focus.
You do know what kind of ISO modern digital cameras are capable of right? When the camera is set to high ISO you can use a high shutter speed and still get clear photo of a high speed subject.
These are all very basic photographic principle.
Sorry but I know much more then you can possibly imagine working in the marketing communication industry looking at various photos and how pictures are composed.