Have you ever been in a situation where you look through your view finder and it is a little cloudy or blurry, but your images are all turning out in focus? Well what could be happening is that your "Diopter" got bumped and caused your view finder to go out of focus. The Diopter is next to the view finder and is used to adjust the view finder to your eyesight. For Canon it is a little dial and for Nikon it is a Slider next to the view finder. Check out Christiana's tip on adjusting the Diopter in the video below.