The fisheye lens projects a portion of a sphere onto a flat surface (the sensor), which results in the characteristic wide angle and distorted appearance. In contrast, a 16mm lens (let’s imagine ...

But while Canon’s full-frame primes will also work on those crop-sensor cameras, the brand has no primes for its crop sensor series aside from the expensive Dual Fisheye VR lens. The Sigma 16mm ...

"The ZUIKO DIGITAL ED 8mm 1:3.5 Fisheye Lens (16mm Fisheye on a 35mm camera) offers a full 180° diagonal angle of view. The possibility of dramatic ultra wide-angle "fisheye" images is enhanced ...