Capturing the decisive moment in an unprompted way, doesn't mean just putting your camera on "P" for professional, pressing the shutter release button on your camera and aiming at the subject. Thought should go into what you are trying to do. Do you have the right lense on to properly capture your subject? Where is the light coming from? Do you need to roll play in your mind ahead of time what you anticipate happening so you can capture the image from the best angle?

To capture the above image, I anticipated what would probably happen, choose the 24-70 Canon Lense so I could allow room for my subject to walk into the scene, and then had my assistant stand in approximately the same spot I knew the bride would eventually walk into so I could get a proper exposure. By thinking ahead, I was prepared for the decisive moment and didn't have to shoot 25 frames, nor "stage" the scene and prompt my subject.