Light matters tremendously when it comes to capturing breath taking photographs. Light is what enables the sensor in your camera to record that image you are attempting to record. If not for light it would be impossible for us to see the beauty the world has to offer much less record it in full color and splendor. So when photographing that next iconic image, consider what light your are taking it in. I love photography because in each image I capture I have to seriously consider the light that is affecting each aspect of my scene and what adjustments I have to make to get that perfect image. Being able to know your camera enough to change the necessary adjustments is crucial.