5 Choosing a lens by focal length
In most cases, the required field of view dictates the lens that is needed. This chapter describes the basic focal length categories.
5.1 Wide angle
Wide-angle lenses are basically any lens with a field of view wider than a standard lens. On a 35mm film camera or full-frame digital, this is any lens with a focal length of 35mm or shorter.
Wide-angle lenses are great when you need to take in a lot of a scene. This could be a dramatic shot of a landscape or a picture showing the interior of a room.
Wide-angle lenses vary wildly in price, with the focal length the primary factor in determining cost. Focal lengths ...