What is Wide-angle lens?
[[File:Canon 17-40 f4 L lens.jpg|thumb|One of Canon's most popular wide-angle lenses - 17-40 mm f/4 L retrofocus zoom lens.]] [[File:Stone Steps Wide Angle Perspective 1933px.jpg|right|thumb|A wide-angle photograph of steps showing the [[Perspective distortion (photography)|perspective distortion]]. The distortion is due to the distance at which the picture is taken. The front stairs appear to tip forward.]] A '''wide-angle lens''' is a lens that has a [[focal length]] that is shorter than that of the [[normal lens]]. Normal lenses have an angle of view of between 40° and 50°. Wide-angle lenses have an angle of view that is bigger. For the [[135 film]] format (the most popular [[photographic film]] type), normal lenses are 50mm focal length. 35mm (with an angle of view of 63 degrees) and 28mm (75°) are slight wide-angle lenses. 24mm (84°), 20mm (94°), 17mm (104°) and 14mm (114°) offer more extreme views (for 35mm film). This is different for digital photography. Many [[digital camera]]s use smaller sensors. This means that the focal lengths have an angle of view that is smaller. That way, an 18mm lens mounted on a digital camera of this type gives an angle of view of the 28mm wide-angle lens, namely 75 degrees, for a multiplier of 1.5. One kind of wide-angle lens is a [[fish eye lens]]. [[Telephoto lens]] is the opposite. It has a long focal length, and a narrow angle of view. {{stub}} [[Category:Camera lenses]]