fish-eye
UK[ˈfɪʃ aɪ]US[ˈfɪʃ ˌaɪ]
n
A very wide-angle photographic lens that produces a characteristic circular, convex, or panoramic image with significant distortion.
n
The characteristic circular, distorted image produced by such a lens.
adj
Denoting or relating to such a lens or the image it produces.
Morpheme Breakdown
fish
eye
fish
eye
Etymology
The compound term "fish-eye" is a modern metaphorical creation from the mid-20th century, directly combining the common English words "fish" and "eye". It draws a direct visual analogy: the bulging, hemispherical cornea of a fish's eye, which provides an extremely wide field of view, is likened to the convex front element of an ultra-wide-angle lens. This lens, developed for scientific and photographic purposes, replicates that expansive, distorted perspective. Thus, the term's logic is purely descriptive, using a familiar biological feature to name a technological innovation that mimics its functional characteristic.
Analysis
Structure: fish + eye
fish: Old English, noun. The aquatic animal. Used here metaphorically to suggest a bulging, hemispherical shape.
eye: Old English, noun. The organ of sight. Used here to denote a lens or a viewing apparatus.
Examples
The photographer used a fish-eye lens to capture the entire interior of the cathedral in one shot.
The music video featured a striking fish-eye effect that made the room appear to curve at the edges.
For this architectural survey, we need a camera equipped with a fish-eye adapter.