Lenses and Focal Length
The Great Courses
Lenses are the most critical tools of photography. In this lecture, he takes you into the field and shows you different camera lenses in action. Among them: 70–200 mm (good for blurring out distracting backgrounds), rectilinear lenses (great for photographing things with minimal distortion), and wide-angle lenses (perfect for both landscapes and for shooting subjects in tight quarters).