The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Viltrox 135mm f1.8 Z 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. Viltrox 135mm f1.8 Z is the longer of the two lenses at 148mm. The Sirui 85mm F1.4 Z with a length of 102mm, is 46mm shorter. Besides being longer, the Viltrox 135mm f1.8 Z also has a larger diameter of 93mm compared to the Sirui 85mm F1.4 Z's 80mm diameter.
Below you can find a scaled side-by-side image of Viltrox 135mm f1.8 Z and Sirui 85mm F1.4 Z to get a better idea of how their sizes compare in real life.
Comparison image of the Viltrox 135mm f1.8 Z 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, 57% (725g) lighter than the Viltrox 135mm f1.8 Z's weight of 1265g.
Below you can find the dimension and weight table of the Telephoto Prime Lenses in Nikon Z Mount for size comparison purposes.
Telephoto Nikon Z Mount
Filter Threads
The Viltrox 135mm f1.8 Z has a filter size of 82mm whereas the Sirui 85mm F1.4 Z 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 82mm filters that we recommend you to consider for the Viltrox 135mm f1.8 Z:
And these are the 67mm filters that we recommend for the Sirui 85mm F1.4 Z:
Lens Mounts
Both the Viltrox 135mm f1.8 Z 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
Viltrox 135mm f1.8 Z is a prime lens with fixed focal lenght of 135mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
202.5mm .
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 .
