Canon EF 15mm lens
Encyclopedia
The Canon EF 15mm 2.8 is Canon's only production prime fisheye lens; other companies make fisheye lenses for Canon though (other fisheye lenses).
The lens is only intended for full-frame bodies, as the fisheye effect is much less pronounced with a cropped sensor (APS-C
).
This means that it provides a full 180° angle of view only across the diagonal; it does not provide a complete hemispherical view, and is not suitable for hemispherical photography
.
The lens is only intended for full-frame bodies, as the fisheye effect is much less pronounced with a cropped sensor (APS-C
APS-C
Advanced Photo System type-C is an image sensor format approximately equivalent in size to the Advanced Photo System "classic" size negatives...
).
Angle of view
The EF 15mm is a full-frame fisheye lens, not a circular fisheye lens.This means that it provides a full 180° angle of view only across the diagonal; it does not provide a complete hemispherical view, and is not suitable for hemispherical photography
Hemispherical photography
Hemispherical photography, also known as fisheye or canopy photography, is a technique to estimate solar radiation and characterize plant canopy geometry using photographs taken looking upward through an extreme wide-angle lens . Typically, the viewing angle approaches or equals 180-degrees, such...
.