Question

Why is learning to control aperture and shutter speed important?

Answer 1

one application would be If you are photographing fast moving objects such as cars or people running you need to select fast shutter speeds to capture the sharpest picture you can.

Answer 2

Because on manual camera;s aperture controls how wide the cameral lens opens to light and how in focus a photo will be, by controlling this function you can make things in the background or fore ground fuzzy, Shutter speed controls how fast the shutter behind the lens opens and closes or how fast light is allowed into the camera and this is the important setting for moving objects.. Aperture is for portraits, and landscapes and art pics, Shutter speed is for sports, movement you want to freexe etc.