When comes the time to start the day for us to do modeling photography our equipments are ready lock and load.
To make a sharp photo of a subject in motion, you need a fast enough shutter speed to "freeze" the motion. How fast is fast enough? That depends on several things.
Lights travels in straight lines. This basic to the formation of an image in a camera. Light refelected from an object flows in a straigh lines from each point on the object, through the lens opening that we call the aperture, and onto the camera's sensor.
Although it takes a sequence of images that appear to be in motion when viewed on a television screen, the video camera is really just a sophisticated extension of the basic still camera.