The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Nikon 80-400mm f4.5-5.6G ED VR and the Sigma 100-400mm F5-6.3 OS 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 80-400mm f4.5-5.6G ED VR is the longer of the two lenses at 203mm. The Sigma 100-400mm F5-6.3 OS with a length of 197mm, is 6mm shorter. Besides being longer, the Nikon 80-400mm f4.5-5.6G ED VR also has a larger diameter of 96mm compared to the Sigma 100-400mm F5-6.3 OS's 86mm 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 100-400mm F5-6.3 OS weighs 1135g, 27% (435g) lighter than the Nikon 80-400mm f4.5-5.6G ED VR's weight of 1570g.
Filter Threads
The Nikon 80-400mm f4.5-5.6G ED VR has a filter size of 77mm whereas the Sigma 100-400mm F5-6.3 OS has a 67mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 77mm filters that we recommend you to consider for the Nikon 80-400mm f4.5-5.6G ED VR:
And these are the 67mm filters that we recommend for the Sigma 100-400mm F5-6.3 OS:
Lens Mounts
The Nikon 80-400mm f4.5-5.6G ED VR has the Nikon F (FX) lens mount whereas the Sigma 100-400mm F5-6.3 OS has the Leica L lens mount. Some of the latest released cameras that are compatible with these mounts are Nikon D6, Nikon D780 and Nikon D3500 for the Nikon F (FX) Mount and Leica SL3-P, Panasonic S1 II and Panasonic S1 IIE for the Leica L Mount.
Sigma 100-400mm F5-6.3 OS is also available in Sony E and Fujifilm X mounts.
Focal Range
Nikon 80-400mm f4.5-5.6G ED VR has a focal range of 80-400mm and
5.0X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
120 - 600mm.
On the other hand, the Sigma 100-400mm F5-6.3 OS has a focal range of 100-400mm and 4.0X zoom ratio .