The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Tamron 70-180mm F2.8 Di G2 and the Sirui 85mm F1.4 Z 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 70-180mm F2.8 Di G2 is the longer of the two lenses at 158mm. The Sirui 85mm F1.4 Z with a length of 102mm, is 56mm shorter. Besides being longer, the Tamron 70-180mm F2.8 Di G2 also has a larger diameter of 83mm compared to the Sirui 85mm F1.4 Z's 80mm diameter.
Below you can find a scaled side-by-side image of Tamron 70-180mm F2.8 Di G2 and Sirui 85mm F1.4 Z to get a better idea of how their sizes compare in real life.
Comparison image of the Tamron 70-180mm F2.8 Di G2 and the Sirui 85mm F1.4 Z 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. Sirui 85mm F1.4 Z weighs 540g, 37% (325g) lighter than the Tamron 70-180mm F2.8 Di G2's weight of 865g.
Filter Threads
Both the Tamron 70-180mm F2.8 Di G2 and the Sirui 85mm F1.4 Z 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 70-180mm F2.8 Di G2 and the Sirui 85mm F1.4 Z has the same Nikon Z lens mount . Some of the latest released cameras that are compatible with the Nikon Z lenses are Nikon ZR , Nikon Z5 II and RED Komodo-X 6K Z .
Focal Range
Tamron 70-180mm F2.8 Di G2 has a focal range of 70-180mm and
2.6X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
105 - 270mm .
On the other hand, the Sirui 85mm F1.4 Z is a prime lens with fixed focal lenght of 85mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 127.5mm .
