Through selecting the range of focus in your picture, you can draw attention to the elements you want to emphasize. You can accomplish this by selecting the focal point and by choosing the appropriate aperture size. Understanding Depth Of Field (DOF) is a powerful creative tool. We will explain how decreasing the aperture size may compensate – to a certain degree – being out of focus. Therefore we will go through some (very) basic physics, starting with the concept of focal distance.