The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sony FE 100-400mm F4.5-5.6 and the Fujifilm XF 16-80mm F4 R OIS WR 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. Sony FE 100-400mm F4.5-5.6 is the longer of the two lenses at 205mm. The Fujifilm XF 16-80mm F4 R OIS WR with a length of 89mm, is 116mm shorter. Besides being longer, the Sony FE 100-400mm F4.5-5.6 also has a larger diameter of 94mm compared to the Fujifilm XF 16-80mm F4 R OIS WR's 78mm diameter.
Below you can find a scaled side-by-side image of Sony FE 100-400mm F4.5-5.6 and Fujifilm XF 16-80mm F4 R OIS WR to get a better idea of how their sizes compare in real life.
Comparison image of the Sony FE 100-400mm F4.5-5.6 and the Fujifilm XF 16-80mm F4 R OIS WR 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. Fujifilm XF 16-80mm F4 R OIS WR weighs 440g, 68% (955g) lighter than the Sony FE 100-400mm F4.5-5.6's weight of 1395g.
Filter Threads
The Sony FE 100-400mm F4.5-5.6 has a filter size of 77mm whereas the Fujifilm XF 16-80mm F4 R OIS WR has a 72mm 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 Sony FE 100-400mm F4.5-5.6:
And these are the 72mm filters that we recommend for the Fujifilm XF 16-80mm F4 R OIS WR:
Lens Mounts
The Sony FE 100-400mm F4.5-5.6 has the Sony E lens mount whereas the Fujifilm XF 16-80mm F4 R OIS WR has the Fujifilm X lens mount . Some of the latest released cameras that are compatible with these mounts are Sony FX5 , Sony A7R VI and Sony A7 V for the Sony E Mount and Fujifilm X-T30 III , Fujifilm X-E5 and Fujifilm X-M5 for the Fujifilm X Mount.
Focal Range
Sony FE 100-400mm F4.5-5.6 has a focal range of 100-400mm and
4.0X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
150 - 600mm .
On the other hand, the Fujifilm XF 16-80mm F4 R OIS WR has a focal range of 16-80mm and 5.0X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 24-120mm when used on a APS-C / DX format camera.