The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Nikon Z 70-180mm F2.8 and the Sigma 50-100mm F1.8 A 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 50-100mm F1.8 A is the longer of the two lenses at 171mm. The Nikon Z 70-180mm F2.8 with a length of 151mm, is 20mm shorter. Besides being longer, the Sigma 50-100mm F1.8 A also has a larger diameter of 94mm compared to the Nikon Z 70-180mm F2.8's 84mm diameter.
Below you can find a scaled side-by-side image of Nikon Z 70-180mm F2.8 and Sigma 50-100mm F1.8 A to get a better idea of how their sizes compare in real life.
Comparison image of the Nikon Z 70-180mm F2.8 and the Sigma 50-100mm F1.8 A Size and Weight 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 70-180mm F2.8 weighs 795g, which means it is 695g (46%) lighter than the Sigma 50-100mm F1.8 A which has a weight of 1490g.
Filter Threads
The Nikon Z 70-180mm F2.8 has a filter size of 67mm whereas the Sigma 50-100mm F1.8 A has a 82mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 67mm filters that we recommend you to consider for the Nikon Z 70-180mm F2.8:
And these are the 82mm filters that we recommend for the Sigma 50-100mm F1.8 A:
Lens Mounts
The Nikon Z 70-180mm F2.8 has the Nikon Z lens mount whereas the Sigma 50-100mm F1.8 A has the Nikon F (DX) 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 D3500 , Nikon D7500 and Nikon D5600 for the Nikon F (DX) Mount.
Canon EF and Sigma SA mounts.
Focal Range
Nikon Z 70-180mm F2.8 has a focal range of 70-180mm and
2.6X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
105 - 270mm .
On the other hand, the Sigma 50-100mm F1.8 A has a focal range of 50-100mm and 2.0X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 75-150mm when used on a APS-C / DX format camera.
