Aperture ..

Aperture F2.8  Part of the tee and the Cheetah.

F16 The Water and the rocks.

High Shutter Speed

Low Shutter Speed


I would of shoot the diamonds performance for the high shutter speed
I would of shoot the DJ/MC working at the middle of the circle slow shutter speed

ISO

1.That you can actually see the ball and you can take a good picture 
2.When there is plenty of light you should use a low ISO
3.When there is not enough light you should use a high ISO

F4- looks the best at 1/250 sec, the background looks blurry 
F5.6- looks the best at 1/60 sec, you can barely see the background 
F8-looks the best at 1/30 sec, the background looks blurry 
F11-looks the best at 1/30 sec, the background looks a little blurry
F16-looks the best at 1/30 sec, the can see the back ground 
F22-looks the best at 1/8 sec. the back ground look normal
as you change the F-stop the image get dark and bright