Above, this image taken at the base of Howth Head in County Dublin shows were I am coming from. Taken at practically the same location, the rather dull image on the left taken at 1/3rd of a sec @F11 is transformed by the use of the "Big Stopper". A third of a second becomes two minutes, and that rather dull snapshot morphs into something a little more interesting.
The example, below shows its capability again.
Here perched on the edge of the rocky Inis Oirr coastline, seconds become minutes and a rather dull image is transformed into something a little more.