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 Viltrox 56mm 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 Viltrox 56mm F1.4 Z with a length of 73mm, is 85mm shorter. Besides being longer, the Tamron 70-180mm F2.8 Di G2 also has a larger diameter of 83mm compared to the Viltrox 56mm F1.4 Z's 69mm diameter.
Below you can find a scaled side-by-side image of Tamron 70-180mm F2.8 Di G2 and Viltrox 56mm 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 Viltrox 56mm 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. Viltrox 56mm F1.4 Z weighs 320g, 63% (545g) lighter than the Tamron 70-180mm F2.8 Di G2's weight of 865g.
Filter Threads
The Tamron 70-180mm F2.8 Di G2 has a filter size of 67mm whereas the Viltrox 56mm F1.4 Z has a 52mm 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 70-180mm F2.8 Di G2:
And these are the 52mm filters that we recommend for the Viltrox 56mm F1.4 Z:
Lens Mounts
The Tamron 70-180mm F2.8 Di G2 has the Nikon Z lens mount whereas the Viltrox 56mm F1.4 Z has the Sony E 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 RED Komodo-X 6K Z , Nikon Z50 II and Nikon Z30 for the Sony E Mount.
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 Viltrox 56mm F1.4 Z is a prime lens with fixed focal lenght of 56mm which has an effective (full-frame 35mm equivalent) focal range of 84mm when used on a APS-C / DX format camera.
