To take creative control over the Shutter Speed, try using Shutter Priority Mode or Manual Mode. By slowing down your shutter speed, you can get some awesome photos of star trails, stretched out clouds, vehicle tail light trails, smooth ocean or waterfall shots, moon trails (yes I said moon trails) and the list goes on.
I have 2 dark bay quarter horses and one does reining, roping and cattle and the other one does really anything like english, western pleasure and barrels etc.