F4  – looks the best at 1/125 of a second shutter speed.

F5.6 – looks the best at 1/60 of a second shutter speed.

F8  – looks the best at 1/80 of a second shutter speed.

F11  – looks the best at 1/30 of a second shutter speed.

F16  – looks the best at 1/30 of a second shutter speed.

F22  – looks the best at 1/8 of a second shutter speed.

No, its pretty blurred out. where no back ground is seen. F2.8

F4 is pretty blurry 

F5.6 ia blurry but you can see there are things in the background but it's still blurry.

F8 You can see shapes.

F11 it is only little unfocused on the subject

F16 More detail of the pictures are more visible.

F22 everything is clear 

1.That something fast isn't going on the people are focused 

2. Have them hold still or change the shutter speed

3. shutter speed at 1/500 and f 2.8 so the picture is clear but the background is blurred out.