The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Nikon AF-P DX 70-300mm F4.5-6.3G 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 AF-P DX 70-300mm F4.5-6.3G is the longer of the two lenses at 125mm. The Sigma 70mm F2.8 EX DG Macro with a length of 95mm, is 30mm shorter. On the other hand, the Sigma 70mm F2.8 EX DG Macro has a larger diameter of 76mm compared to the Nikon AF-P DX 70-300mm F4.5-6.3G'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. Nikon AF-P DX 70-300mm F4.5-6.3G weighs 400g, which means it is 127g (24%) lighter than the Sigma 70mm F2.8 EX DG Macro which has a weight of 527g.
Lens Mounts
The Nikon AF-P DX 70-300mm F4.5-6.3G has the Nikon F (DX) 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 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.
Sigma 70mm F2.8 EX DG Macro is also available in Canon EF , Pentax KAF, Sony Alpha and Sigma SA mounts.
Focal Range
Nikon AF-P DX 70-300mm F4.5-6.3G has a focal range of 70-300mm and
4.3X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of
105-450mm when used on a APS-C / DX format camera.
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.