My First Photo Outing - Principles of Design

                    This photo of this bright red Nike bag meets the principle , Emphasis , because the red bag stands out in the  background of the quad. Also , when you pay attention of this picture in particular , you can notice that the background is blurred out while the red bag catches the viewer's attention.  Finally , this meets the principle because the red bag contrast with the background . 

Link To Principles Of Design .