Telephoto

Telephoto

Telephoto is a term in photography and optics that refers to lenses with longer focal lengths than the physical length of the lens itself. These lenses are designed to capture distant subjects with magnification, making them appear closer than they are in reality. The telephoto effect is achieved through the use of a special lens configuration that combines a positive front element with a negative rear element, effectively extending the focal length while maintaining a compact lens design. Telephoto lenses are commonly used in various fields of photography, such as wildlife, sports, and portraiture, where capturing subjects from a distance is necessary. They come in different focal lengths, typically ranging from moderate telephotos (around 70-200mm) to super telephotos (over 300mm), and can be either prime lenses with a fixed focal length or zoom lenses with variable focal lengths. The use of telephoto lenses requires careful consideration of factors such as camera stability, focusing accuracy, and atmospheric conditions, as the magnification can amplify any camera shake or distortions. Photographers often employ techniques like using a tripod, monopod, or image stabilization to mitigate these challenges and ensure sharp, detailed images.

photography, optics, lenses, focal length, magnification, camera

— John Armstrong

CITATION : "John Armstrong. 'Telephoto.' Design+Encyclopedia. https://design-encyclopedia.com/define/telephoto?E=433921 (Accessed on October 14, 2026)"