In recent years prime lenses have gained in popularity, especially as photographers learn that this variety of lens offers improved image quality and light gathering. But what makes them so special? In this small book, part of the Little Books on Lenses series, you will learn about why prime lenses provide such good image quality, why they do so at smaller weight and cost and with greater longevity, and how to think about focal length and angle of view. For anyone looking to expand his or her understanding of lenses and optics, this is a great introduction.