Canon's New FD full-frame fisheye — the 15mm f/2.8 with a 180-degree diagonal field.
The Canon New Fish-Eye FD 15mm f/2.8 arrived in 1980 as the New FD generation revision of Canon's full-frame diagonal fisheye. It brought the design into the black New FD styling with the redesigned breech-free bayonet, remaining the standard full-frame fisheye of the FD system through the manual-focus era.
This is a manual-focus Canon FD lens with a fixed 15mm focal length and a maximum aperture of f/2.8. It is a diagonal fisheye filling the full 35mm frame with a 180-degree field measured corner to corner, and it uses built-in turret filters instead of a front screw-in filter. Focus and aperture are controlled by hand on the New FD barrel.
The lens renders the familiar curved fisheye perspective that bends straight lines toward the frame edges while the centre stays comparatively natural. It is used for landscapes, cramped interiors, sports and creative wide imagery where the dramatic geometry is embraced, and the short focal length yields extensive depth of field across the aperture range.
On the used market this New FD fisheye is popular with mirrorless adapters, so inspect the protruding front element closely for marks. Look for haze, fungus and sticky aperture blades common at this age, confirm the filter turret turns and the New FD mount ring locks properly. An optics-free FD-to-mirrorless adapter preserves the fisheye behaviour.