Use sunny 16 rule to get correct exposure in daylight

While shooting in daylight, there is only one question... how do i get correct exposure???? we alway  try couple shots, then we get one correct exposure or you can simply use sunny 16 rule to get correct exposure in bright daylight.

Sunny 16 rule says  set your aperture to f16 at the same shutter speed as your ISO setting under direct sunlight. In this image, i set shutter speed and ISO to 200, if you want freeze the motion, then set shutter speed/ISO to 400 or higher.

Focal Length : 18 mm, Shutter Speed : 1/200 of a sec, f stop(Aperture) : f/16, ISO : 200, White Balance : Auto