August 15th, 2008 
“This post on Understanding Shutter Speed, written by Hawaii photographer Natalie Norton is a follow up post to Moving Toward Manual: Understanding Aperture. The posts are being written as a beginner’s guide to gaining confidence in using manual camera settings.”
Knowing your camera is very important and suggest you read this article from digital-photography-school.com if you are not sure how to set your shutter speeds.