Size and Weight Comparison
Size of a lens is an important deciding factor when comparing two lenses.Tamron 17-70 F2.8 Di III-A VC is the longer of the two lenses at 119mm. The Fujifilm XF 16-80mm F4 R OIS WR with a length of 89mm is 30mm shorter. On the other hand, the Fujifilm XF 16-80mm F4 R OIS WR has a larger diameter of 78mm compared to Tamron 17-70 F2.8 Di III-A VC's 75mm diameter.
Below you can find the scaled side by side image of Tamron 17-70 F2.8 Di III-A VC and Fujifilm XF 16-80mm F4 R OIS WR to get a better idea of how their size compare in real life.
Comparison image of Tamron 17-70 F2.8 Di III-A VC and Fujifilm XF 16-80mm F4 R OIS WR Size and Weight Weight of a lens is as important as its external dimensions, especially if you are planning to hand hold your camera and lens combination for longer periods. Fujifilm XF 16-80mm F4 R OIS WR weighs 440g, 19% (85g) lighter than the Tamron 17-70 F2.8 Di III-A VC's weight of 525g.
Below you can find the dimension and weight table of the 'Standard Zoom Lenses in Fujifilm X Mount for size comparison purposes.
Standard Zoom Lenses in Fujifilm X Mount for Size Comparison
Lens Mounts
Both Tamron 17-70 F2.8 Di III-A VC and Fujifilm XF 16-80mm F4 R OIS WR has the same Fujifilm X lens mount. Some of the latest released cameras that are compatible with the Fujifilm X lenses are Fujifilm X-H2S, Fujifilm X-T30 II and Fujifilm X-E4.
Tamron 17-70 F2.8 Di III-A VC is also available in Sony E mount.
Focal Range
Tamron 17-70 F2.8 Di III-A VC has a focal range of 17-70mm and 4.1X zoom ratio which has a 35mm equivalent focal range of 25.5-105mm when used on a APS-C / DX format camera. Fujifilm XF 16-80mm F4 R OIS WR has a focal range of 16-80mm and 5.0X zoom ratio which has a 35mm equivalent focal range of 24-120mm when used on a APS-C / DX format camera.