The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Viltrox AF 56mm f1.7 XF and the Fujifilm 50-140mm F2.8 R OI 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. Fujifilm 50-140mm F2.8 R OI is the longer of the two lenses at 176mm. The Viltrox AF 56mm f1.7 XF with a length of 55mm, is 121mm shorter. Besides being longer, the Fujifilm 50-140mm F2.8 R OI also has a larger diameter of 83mm compared to the Viltrox AF 56mm f1.7 XF's 65mm 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. Viltrox AF 56mm f1.7 XF weighs 171g, which means it is 824g (82%) lighter than the Fujifilm 50-140mm F2.8 R OI which has a weight of 995g.
Filter Threads
The Viltrox AF 56mm f1.7 XF has a filter size of 52mm whereas the Fujifilm 50-140mm F2.8 R OI has a 72mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 52mm filters that we recommend you to consider for the Viltrox AF 56mm f1.7 XF:
And these are the 72mm filters that we recommend for the Fujifilm 50-140mm F2.8 R OI:
Lens Mounts
Both the Viltrox AF 56mm f1.7 XF and the Fujifilm 50-140mm F2.8 R OI has the same Fujifilm X lens mount. Some of the latest released cameras that are compatible with the Fujifilm X lenses are Fujifilm X-T30 III, Fujifilm X-E5 and Fujifilm X-M5.
Focal Range
Viltrox AF 56mm f1.7 XF 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.
On the other hand, the Fujifilm 50-140mm F2.8 R OI has a focal range of 50-140mm and 2.8X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 75-210mm when used on a APS-C / DX format camera.
