What does fisheye mean?
A fisheye is an extremely wide-angle lens used in photography and videography, named for the way its images recall the bulging, panoramic view associated with a fish's eye. With focal lengths typically between about 8 and 16 millimetres, a fisheye captures a field of view approaching 180 degrees, but at a cost: straight lines bow outward from the centre of the frame, a distortion known as barrel distortion. This exaggerated curvature is precisely what makes the lens distinctive, and it is prized in action sports footage, skate videos, architectural interiors, and creative portraiture where an immersive, slightly surreal effect is desired. The word also survives informally as 'the fisheye', meaning a cold, suspicious stare. Whether describing specialised optical equipment or a pointed glance, 'fisheye' is a vivid compound whose imagery makes its meaning easy to grasp even for readers who have never handled the lens itself.
An ultra-wide-angle lens producing pronounced barrel distortion and a field of view approaching 180 degrees; also, the distorted image made by such a lens.
"The estate agent photographed the tiny flat with a fisheye to make the rooms look larger."
Usually appears attributively, as in 'fisheye lens' or 'fisheye shot'.
Informal: a hostile, suspicious, or disapproving sideways glance.
"When he arrived late again, his boss gave him the fisheye."
Chiefly in the phrase 'to give someone the fisheye'; informal and now somewhat dated, especially in American English.
Standard pluralisation; used when referring to multiple such lenses or multiple glances.
"The studio owned several fisheyes, ranging from 8mm to 15mm."
A fisheye lens can squeeze nearly 180 degrees of the world into one frame — your camera seeing almost as wide as your own eyes.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of fisheye
The term 'fisheye' is a straightforward English compound of 'fish' and 'eye', formed to describe the bulbous, hemispherical quality of the images these lenses produce. The name was inspired by the belief that a fish sees the world through an ultra-wide, distorted view because of the refractive properties of water and the structure of its eyes. Fisheye lenses were developed in the early twentieth century, initially for scientific and meteorological purposes such as photographing entire cloud formations and skies, before entering mainstream photographic vocabulary and popular culture. The word shares its first element with the broad family of English 'fish-' compounds such as 'fisher', 'fishy', and 'fishing'.
How fisheye is actually used
Most commonly encountered as a modifier ('fisheye lens', 'fisheye view') rather than standalone. The slang sense meaning a hostile glance is informal and somewhat dated, familiar mainly from mid-20th-century American usage. In technical photography contexts the term is neutral; in casual speech it carries no strong connotation.
Easily confused with fisheye
'Fisheye' names an ultra-wide lens or a glare, while 'fishtail' describes a side-to-side skidding motion or a shape resembling a fish's tail.