The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Tokina 12-24mm f4 DX and the Sigma 12-24mm F4.5-5.6 EX 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 F4.5-5.6 EX DG HSM is the longer of the two lenses at 103mm. The Tokina 12-24mm f4 DX with a length of 90mm, is 13mm shorter. Besides being longer, the Sigma 12-24mm F4.5-5.6 EX DG HSM also has a larger diameter of 87mm compared to the Tokina 12-24mm f4 DX's 84mm 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. Tokina 12-24mm f4 DX weighs 570g, which means it is 30g (5%) lighter than the Sigma 12-24mm F4.5-5.6 EX DG HSM which has a weight of 600g.
Lens Mounts
The Tokina 12-24mm f4 DX has the Nikon F (DX) lens mount whereas the Sigma 12-24mm F4.5-5.6 EX DG HSM has the Nikon F (FX) lens mount. Some of the latest released cameras that are compatible with these mounts are Nikon D3500, Nikon D7500 and Nikon D5600 for the Nikon F (DX) Mount and Nikon D6, Nikon D780 and Nikon D3500 for the Nikon F (FX) Mount.
Tokina 12-24mm f4 DX is also available in Canon EF mount.
Sigma 12-24mm F4.5-5.6 EX DG HSM is also available in Canon EF , Pentax KAF, Sony Alpha and Sigma SA mounts.
Focal Range
Both lenses have the same focal range of
12-24mm but while Tokina 12-24mm f4 DX has the fastest aperture of
F4.0, the Sigma 12-24mm F4.5-5.6 EX DG HSM's widest aperture value is
F4.5 - F5.6.