Now what is depth of field?  This is basically your focus, or what part of the image is blurry and what part is in focus.  Having a shallow depth of field allow for you to have a greater part of your image out of focus, and a more refined part in focus.  Now you may thinking to yourself, “Self, I want everything to be in focus, that is higher quality!”  Unfortunately, that is wrong.  Having a part of an image in focus makes for a very interesting, and expensive looking shot.  As we can see in EXAMPLE 1, part of the image is in focus, the part that is closest to the camera.  As we look further down the keyboard, we can see that it becomes blurry.  This is the basics behind focus and depth of field.  This can be used in more complex situations, such as having one character (usually the one that has dialogue) in focus and another (usually the one with their back to the camera) out of focus.  In contrast, as we can see in EXAMPLE 2,having the entire image in focus isn’t as interesting.  EXAMPLE 2 is a very amateur way of filming, and tips off people that you don’t have much production value.  The reason for this is because it probably means that you are capturing audio using the built in mic on the camera, and therefore need to be as close to the subject as possible.  We will share ways of getting around this problem in later posts.