The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Nikon Z 18-140mm f3.5-6.3 VR and the Tamron 18-300mm F3.5-6.3 Di 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 18-300mm F3.5-6.3 Di is the longer of the two lenses at 126mm. The Nikon Z 18-140mm f3.5-6.3 VR with a length of 90mm, is 36mm shorter. Besides being longer, the Tamron 18-300mm F3.5-6.3 Di also has a larger diameter of 76mm compared to the Nikon Z 18-140mm f3.5-6.3 VR's 73mm diameter.
Below you can find a scaled side-by-side image of Nikon Z 18-140mm f3.5-6.3 VR and Tamron 18-300mm F3.5-6.3 Di to get a better idea of how their sizes compare in real life.
Comparison image of the Nikon Z 18-140mm f3.5-6.3 VR and the Tamron 18-300mm F3.5-6.3 Di 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. Nikon Z 18-140mm f3.5-6.3 VR weighs 315g, which means it is 305g (49%) lighter than the Tamron 18-300mm F3.5-6.3 Di which has a weight of 620g.
Filter Threads
The Nikon Z 18-140mm f3.5-6.3 VR has a filter size of 62mm whereas the Tamron 18-300mm F3.5-6.3 Di 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 62mm filters that we recommend you to consider for the Nikon Z 18-140mm f3.5-6.3 VR:
And these are the 67mm filters that we recommend for the Tamron 18-300mm F3.5-6.3 Di:
Lens Mounts
The Nikon Z 18-140mm f3.5-6.3 VR has the Nikon Z lens mount whereas the Tamron 18-300mm F3.5-6.3 Di 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.
Tamron 18-300mm F3.5-6.3 Di is also available in Fujifilm X mount.
Focal Range
Nikon Z 18-140mm f3.5-6.3 VR has a focal range of 18-140mm and
7.8X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of
27-210mm when used on a APS-C / DX format camera.
On the other hand, the Tamron 18-300mm F3.5-6.3 Di has a focal range of 18-300mm and 16.7X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 27-450mm when used on a APS-C / DX format camera.