The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Nikon AF-S Fisheye 8-15mm F3.5-4.5 and the Sigma 12-24mm F4 DG HSM 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. Sigma 12-24mm F4 DG HSM is the longer of the two lenses at 132mm. The Nikon AF-S Fisheye 8-15mm F3.5-4.5 with a length of 83mm, is 49mm shorter. Besides being longer, the Sigma 12-24mm F4 DG HSM also has a larger diameter of 101mm compared to the Nikon AF-S Fisheye 8-15mm F3.5-4.5's 78mm diameter.
Below you can find a scaled side-by-side image of Nikon AF-S Fisheye 8-15mm F3.5-4.5 and Sigma 12-24mm F4 DG HSM to get a better idea of how their sizes compare in real life.
Comparison image of the Nikon AF-S Fisheye 8-15mm F3.5-4.5 and the Sigma 12-24mm F4 DG HSM Size and Weight 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. Nikon AF-S Fisheye 8-15mm F3.5-4.5 weighs 485g, which means it is 666g (57%) lighter than the Sigma 12-24mm F4 DG HSM which has a weight of 1151g.
Below you can find the dimension and weight table of the Wideangle Fisheye Zoom Lenses in Nikon F (FX) Mount for size comparison purposes.
Ultra-Wideangle Lenses in Nikon F (FX) Mount for Size Comparison
Lens Mounts
Both the Nikon AF-S Fisheye 8-15mm F3.5-4.5 and the Sigma 12-24mm F4 DG HSM has the same Nikon F (FX) lens mount . Some of the latest released cameras that are compatible with the Nikon F (FX) lenses are Nikon D6 , Nikon D780 and Nikon D3500 .
Sigma 12-24mm F4 DG HSM is also available in Sigma SA and Canon EF mounts.
Focal Range
Nikon AF-S Fisheye 8-15mm F3.5-4.5 has a focal range of 8-15mm and
1.9X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
12 - 22.5mm .
On the other hand, the Sigma 12-24mm F4 DG HSM has a focal range of 12-24mm and 2.0X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 18 - 36mm .