The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Tokina atx-i Pro 11-16mm F2.8 CF and the Canon 15mm f2.8 Fisheye for their suitability to various photography scenarios:
Size and Weight Comparison
The size of a lens is a crucial factor to consider when comparing two lenses. Tokina atx-i Pro 11-16mm F2.8 CF is the longer of the two lenses at 89mm. The Canon 15mm f2.8 Fisheye with a length of 62mm, is 27mm shorter. Besides being longer, the Tokina atx-i Pro 11-16mm F2.8 CF also has a larger diameter of 84mm compared to the Canon 15mm f2.8 Fisheye's 73mm diameter.
The weight of a lens is equally significant as its external dimensions, particularly if you intend to handhold your camera and lens combination for extended periods. Canon 15mm f2.8 Fisheye weighs 330g, 40% (225g) lighter than the Tokina atx-i Pro 11-16mm F2.8 CF's weight of 555g.
Lens Mounts
The Tokina atx-i Pro 11-16mm F2.8 CF has the Canon EF-S lens mount whereas the Canon 15mm f2.8 Fisheye has the Canon EF lens mount. Some of the latest released cameras that are compatible with these mounts are Canon T8i, Canon 90D and Canon SL3 for the Canon EF-S Mount and Blackmagic URSA 12K LF, Z CAM E2-F6 II 6K and Z CAM E2-S6 II 6K for the Canon EF Mount.
Tokina atx-i Pro 11-16mm F2.8 CF is also available in the Canon EF-S mount.
Focal Range
Tokina atx-i Pro 11-16mm F2.8 CF has a focal range of 11-16mm and
1.5X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of
17.6-25.6mm when used on a APS-C / DX format camera.
On the other hand, the Canon 15mm f2.8 Fisheye is a prime lens with fixed focal lenght of 15mm. When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of 24mm.
