The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Nikon Z 85mm F1.8 S and the Sigma 70mm F2.8 EX DG Macro 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. Nikon Z 85mm F1.8 S is the longer of the two lenses at 99mm. The Sigma 70mm F2.8 EX DG Macro with a length of 95mm, is 4mm shorter. On the other hand, the Sigma 70mm F2.8 EX DG Macro has a larger diameter of 76mm compared to the Nikon Z 85mm F1.8 S's 75mm 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. Nikon Z 85mm F1.8 S weighs 470g, which means it is 57g (10%) lighter than the Sigma 70mm F2.8 EX DG Macro which has a weight of 527g.
Lens Mounts
The Nikon Z 85mm F1.8 S has the Nikon Z lens mount whereas the Sigma 70mm F2.8 EX DG Macro has the Nikon F (FX) lens mount. Some of the latest released cameras that are compatible with these mounts are Nikon ZR, Nikon Z5 II and RED Komodo-X 6K Z for the Nikon Z Mount and Nikon D6, Nikon D780 and Nikon D3500 for the Nikon F (FX) Mount.
Sigma 70mm F2.8 EX DG Macro is also available in Canon EF , Pentax KAF, Sony Alpha and Sigma SA mounts.
Focal Range
Nikon Z 85mm F1.8 S is a prime lens with fixed focal lenght of 85mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
127.5mm.
On the other hand, the Sigma 70mm F2.8 EX DG Macro is a prime lens with fixed focal lenght of 70mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 105mm.
