The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Tamron 17-70 F2.8 Di III-A VC and the Fujifilm 18-135mm F3.5-5.6 R OIS 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. Tamron 17-70 F2.8 Di III-A VC is the longer of the two lenses at 119mm. The Fujifilm 18-135mm F3.5-5.6 R OIS with a length of 98mm, is 21mm shorter. On the other hand, the Fujifilm 18-135mm F3.5-5.6 R OIS has a larger diameter of 76mm compared to the Tamron 17-70 F2.8 Di III-A VC's 75mm diameter.
Below you can find a scaled side-by-side image of Tamron 17-70 F2.8 Di III-A VC and Fujifilm 18-135mm F3.5-5.6 R OIS to get a better idea of how their sizes compare in real life.
Comparison image of the Tamron 17-70 F2.8 Di III-A VC and the Fujifilm 18-135mm F3.5-5.6 R OIS 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 18-135mm F3.5-5.6 R OIS weighs 490g, 6% (35g) lighter than the Tamron 17-70 F2.8 Di III-A VC's weight of 525g.
Filter Threads
Both the Tamron 17-70 F2.8 Di III-A VC and the Fujifilm 18-135mm F3.5-5.6 R OIS have the same Filter thread size of 67mm .
Below are links to the 67mm filters that we recommend you to consider for these lenses:
Lens Mounts
Both the Tamron 17-70 F2.8 Di III-A VC and the Fujifilm 18-135mm F3.5-5.6 R OIS has the same Fujifilm X lens mount . Some of the latest released cameras that are compatible with the Fujifilm X lenses are Fujifilm X-T30 III , Fujifilm X-E5 and Fujifilm X-M5 .
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 an effective (full-frame 35mm equivalent) focal range of
25.5-105mm when used on a APS-C / DX format camera.
On the other hand, the Fujifilm 18-135mm F3.5-5.6 R OIS has a focal range of 18-135mm and 7.5X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 27-202.5mm when used on a APS-C / DX format camera.
