The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Zeiss Otus 85mm f1.4 and the Fujinon MK 50-135mm T2.9 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 Zeiss Otus 85mm f1.4 with a length of 128mm, is 78mm shorter. On the other hand, the Zeiss Otus 85mm f1.4 has a larger diameter of 88mm compared to the Fujinon MK 50-135mm T2.9's 85mm 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. Fujinon MK 50-135mm T2.9 weighs 980g, 5% (60g) lighter than the Zeiss Otus 85mm f1.4's weight of 1040g.
Filter Threads
The Zeiss Otus 85mm f1.4 has a filter size of 77mm whereas the Fujinon MK 50-135mm T2.9 has a 82mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 77mm filters that we recommend you to consider for the Zeiss Otus 85mm f1.4:
And these are the 82mm filters that we recommend for the Fujinon MK 50-135mm T2.9:
Lens Mounts
Both the Zeiss Otus 85mm f1.4 and the Fujinon MK 50-135mm T2.9 has the same Sony E lens mount. Some of the latest released cameras that are compatible with the Sony E lenses are Sony FX5, Sony A7R VI and Sony A7 V.
Zeiss Otus 85mm f1.4 is also available in the Canon EF , Nikon F (FX), Canon RF and Nikon Z mounts.
Focal Range
Zeiss Otus 85mm f1.4 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.
On the other hand, the 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.
