Apparent Subject Motion
Exaggerate movement with shutter speeds slower than 1/60
There are times when you will want to freeze the motion of a moving subject; at others, you may want to exaggerate movement by recording motion blur. Decisions about these matters are related to Apparent Subject Motion. This is controlled by shutter speed. Faster shutter speeds stop action better than slower speeds. 1/500 second will stop most motion still, while 1/15 second will blur even slow-moving subjects.
Motion is best recorded when using a tripod, as the blur of the moving subject contrasts with the static content which remains sharp.