Lens range - 14263

Illustrator Draftsman 1 & C - Volume 3 Executionable Practices
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Lenses, Continued Lens range Lens range refers to focal length, or the distance between the lens plane and the focal plane. Lens ranges may be fixed or variable. Fixed lenses have focal lengths that do not change. Lens ranges may be long, short, standard, or macro. Variable lenses have changeable focal lengths to zoom images closer or farther away. Long-range lenses Long-range lenses are lenses with focal lengths greater than 58mm. Most long-focal-length lenses are called telephoto lenses. Use these lenses to draw images closer. Lenses ranging from 85mm to 105mm are used for portraiture because they create the most natural images of people, without excessive distortion. Ideal for action or sports photography, long-range lenses require more light and faster film than standard lenses. Short-range lenses Short-range lenses are lenses with focal lengths less than 50mm. Short-range lenses include wide-angle lenses (less than 40mm in focal length), and ultra- wide-angle lenses, called fisheye lenses, with focal lengths of 17mm or less. Shorter focal-length lenses magnify features nearest the camera to the point of apparent distortion. Wide-angle lenses are indispensable for filming in confined spaces and panoramic views. Use a lens hood to shade wide-angle lenses from glare. Standard-range lenses Standard-range lenses have focal lengths between 50mm and 58mm, with the most common focal length being 50mm. Standard-range lenses most closely record images as the human eye would see them. Distortion is negligible. Macro lenses The most popular macro lenses have focal lengths of 50mm and 100mm. Use a macro lens for close-up photography such as copy work. With 100mm macro lenses, you do not have to get as close to the subject as with 50mm macro lenses. The extra distance 100mrn macros provide is especially useful when taking pictures that present hazards. Macro lenses perform well and offer greater versatility when used as general-purpose lenses in routine shoots. Continued on next page 7-30

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