The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Fujinon MK 50-135mm T2.9 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. Fujinon MK 50-135mm T2.9 is the longer of the two lenses at 206mm. The Fujifilm 50-140mm F2.8 R OI with a length of 176mm, is 30mm shorter. Besides being longer, the Fujinon MK 50-135mm T2.9 also has a larger diameter of 85mm compared to the Fujifilm 50-140mm F2.8 R OI's 83mm diameter.
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Below you can find a scaled side-by-side image of Fujinon MK 50-135mm T2.9 and Fujifilm 50-140mm F2.8 R OI to get a better idea of how their sizes compare in real life.
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. Fujinon MK 50-135mm T2.9 weighs 980g, which means it is 15g (1%) lighter than the Fujifilm 50-140mm F2.8 R OI which has a weight of 995g.
Filter Threads
The Fujinon MK 50-135mm T2.9 has a filter size of 82mm 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 82mm filters that we recommend you to consider for the Fujinon MK 50-135mm T2.9:
And these are the 72mm filters that we recommend for the Fujifilm 50-140mm F2.8 R OI:
Lens Mounts
The Fujinon MK 50-135mm T2.9 has the Sony E lens mount whereas the Fujifilm 50-140mm F2.8 R OI has the Fujifilm X lens mount. Some of the latest released cameras that are compatible with these mounts are Sony A9 III, Sony A7C Mark II and Sony A7CR for the Sony E Mount and Fujifilm X-S20, Fujifilm X-T5 and Fujifilm X-H2 for the Fujifilm X Mount.
Focal Range
Fujinon MK 50-135mm T2.9 has a focal range of 50-135mm and
2.7X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
75 - 202.5mm.
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.