The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 15mm F2.8 EX DG Fisheye and the Canon 8-15mm f4L Fisheye USM 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. Canon 8-15mm f4L Fisheye USM is the longer of the two lenses at 83mm. The Sigma 15mm F2.8 EX DG Fisheye with a length of 65mm, is 18mm shorter. Besides being longer, the Canon 8-15mm f4L Fisheye USM also has a larger diameter of 79mm compared to the Sigma 15mm F2.8 EX DG Fisheye's 74mm 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. Sigma 15mm F2.8 EX DG Fisheye weighs 370g, which means it is 170g (31%) lighter than the Canon 8-15mm f4L Fisheye USM which has a weight of 540g.
Lens Mounts
Both the Sigma 15mm F2.8 EX DG Fisheye and the Canon 8-15mm f4L Fisheye USM has the same Canon EF lens mount. Some of the latest released cameras that are compatible with the Canon EF lenses are Blackmagic URSA 12K LF, Z CAM E2-F6 II 6K and Z CAM E2-S6 II 6K.
Sigma 15mm F2.8 EX DG Fisheye is also available in the Nikon F (FX) , Pentax KAF, Sony Alpha and Sigma SA mounts.
Focal Range
Sigma 15mm F2.8 EX DG 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.
On the other hand, the Canon 8-15mm f4L Fisheye USM has a focal range of 8-15mm and 1.9X zoom ratio . When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of 12.8 - 24mm.
