The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Nikon Z 16-50mm F2.8 and the Sigma 18-50mm F2.8 DC DN C 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 16-50mm F2.8 is the longer of the two lenses at 88mm. The Sigma 18-50mm F2.8 DC DN C with a length of 75mm, is 13mm shorter. Besides being longer, the Nikon Z 16-50mm F2.8 also has a larger diameter of 75mm compared to the Sigma 18-50mm F2.8 DC DN C's 65mm diameter.
Below you can find a scaled side-by-side image of Nikon Z 16-50mm F2.8 and Sigma 18-50mm F2.8 DC DN C to get a better idea of how their sizes compare in real life.
Comparison image of the Nikon Z 16-50mm F2.8 and the Sigma 18-50mm F2.8 DC DN C 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. Sigma 18-50mm F2.8 DC DN C weighs 290g, 12% (40g) lighter than the Nikon Z 16-50mm F2.8's weight of 330g.
Filter Threads
The Nikon Z 16-50mm F2.8 has a filter size of 67mm whereas the Sigma 18-50mm F2.8 DC DN C has a 55mm 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 16-50mm F2.8:
And these are the 55mm filters that we recommend for the Sigma 18-50mm F2.8 DC DN C:
Lens Mounts
The Nikon Z 16-50mm F2.8 has the Nikon Z lens mount whereas the Sigma 18-50mm F2.8 DC DN C has the Sony E 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 Sony ZV-E10 II , Sony A6700 and Sony FX30 for the Sony E Mount.
Sigma 18-50mm F2.8 DC DN C is also available in Leica L and Fujifilm X mounts.
Focal Range
Nikon Z 16-50mm F2.8 has a focal range of 16-50mm and
3.1X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of
24-75mm when used on a APS-C / DX format camera.
On the other hand, the Sigma 18-50mm F2.8 DC DN C has a focal range of 18-50mm and 2.8X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 27-75mm when used on a APS-C / DX format camera.