The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Tamron 90mm F2.8 Di III and the Nikon Micro-105mm f2.8G IF-ED VR 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 90mm F2.8 Di III is the longer of the two lenses at 126mm. The Nikon Micro-105mm f2.8G IF-ED VR with a length of 116mm, is 10mm shorter. On the other hand, the Nikon Micro-105mm f2.8G IF-ED VR has a larger diameter of 83mm compared to the Tamron 90mm F2.8 Di III's 79mm 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. Tamron 90mm F2.8 Di III weighs 630g, which means it is 90g (12%) lighter than the Nikon Micro-105mm f2.8G IF-ED VR which has a weight of 720g.
Filter Threads
The Tamron 90mm F2.8 Di III has a filter size of 67mm whereas the Nikon Micro-105mm f2.8G IF-ED VR has a 62mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 67mm filters that we recommend you to consider for the Tamron 90mm F2.8 Di III:
And these are the 62mm filters that we recommend for the Nikon Micro-105mm f2.8G IF-ED VR:
Lens Mounts
The Tamron 90mm F2.8 Di III has the Nikon Z lens mount whereas the Nikon Micro-105mm f2.8G IF-ED VR has the Nikon F (FX) lens mount. Some of the latest released cameras that are compatible with these mounts are Nikon ZR, Nikon Z5 II and RED Komodo-X 6K Z for the Nikon Z Mount and Nikon D6, Nikon D780 and Nikon D3500 for the Nikon F (FX) Mount.
Tamron 90mm F2.8 Di III is also available in the Sony E mount.
Focal Range
Tamron 90mm F2.8 Di III is a prime lens with fixed focal lenght of 90mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
135mm.
On the other hand, the Nikon Micro-105mm f2.8G IF-ED VR is a prime lens with fixed focal lenght of 105mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 157.5mm.