The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Nikon 14-24mm f2.8G ED and the Sigma 12-24mm F4 DG HSM for their suitability to various photography scenarios:
Size and Weight Comparison
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 14-24mm f2.8G ED weighs 970g, which means it is 181g (15%) 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 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 14-24mm f2.8G ED 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 14-24mm f2.8G ED has a focal range of 14-24mm and
1.7X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
21 - 36mm.
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.