4 Controls

ISO:
-sensitivity of the camera to light 
-higher the number, the more sensitive it is (3200 vs. 800) 
-image colours appear cleaner with low ISO, less noise 
-400 or less 

Shutter Speed:
-measured in seconds
-faster shutter speeds--> captures fast moving objects, water falls, cars-->looks cooler 
-1/60th of a second-->people
-1/500-->athlete

Aperture:
-wider lens-->more light
-more light-->less time required for a decent expose
-smaller aperture-->thicker/more depth of field 

Exposure:
-controlled by shutter speed and aperture