Here is a fast tip on how to isolate a specific area on an image and blur it. Using the elliptical marquee tool, select the area you desire to blur. A good example would probably be an individual’s face in a crowd shot, if you do not want to reveal their identity. Next go to the drop down menu, filter, blur, gaussian blur. Select the intensity level in which you want to blur the object or person. It’s that easy! Get creative with it!