Lenses and Focal Length

S1 E3: According to Mr. Sartore, lenses are the most critical tools of photography. Here, he takes you into the field and shows you different lenses in action. Among them: 70-200 mm (good for blurring out distractions), rectilinear lenses (great for photographing things with minimal distortion), and wide-angle lenses (perfect for landscapes and for shooting in tight quarters).