The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 16mm F1.4 C and the Rokinon 14mm f2.8 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. Rokinon 14mm f2.8 is the longer of the two lenses at 96mm. The Sigma 16mm F1.4 C with a length of 92mm, is 4mm shorter. Besides being longer, the Rokinon 14mm f2.8 also has a larger diameter of 87mm compared to the Sigma 16mm F1.4 C's 72mm 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 16mm F1.4 C weighs 405g, which means it is 147g (26%) lighter than the Rokinon 14mm f2.8 which has a weight of 552g.
Lens Mounts
The Sigma 16mm F1.4 C has the Nikon Z lens mount whereas the Rokinon 14mm f2.8 has the Nikon F (FX) lens mount. Some of the latest released cameras that are compatible with these mounts are RED Komodo-X 6K Z, Nikon Z50 II and Nikon Z30 for the Nikon Z Mount and Nikon D6, Nikon D780 and Nikon D3500 for the Nikon F (FX) Mount.
Sigma 16mm F1.4 C is also available in the Canon RF mount.
Rokinon 14mm f2.8 is also available in Canon EF , Four Thirds, Pentax KAF, Sony Alpha and Samsung NX mounts.
Focal Range
Sigma 16mm F1.4 C is a prime lens with fixed focal lenght of 16mm which has an effective (full-frame 35mm equivalent) focal range of
24mm when used on a APS-C / DX format camera.
On the other hand, the Rokinon 14mm f2.8 is a prime lens with fixed focal lenght of 14mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 21mm.
