The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sony FE 50-150mm F2 and the Zeiss Loxia 85mm F2.4 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. Sony FE 50-150mm F2 is the longer of the two lenses at 200mm. The Zeiss Loxia 85mm F2.4 with a length of 95mm, is 105mm shorter. Besides being longer, the Sony FE 50-150mm F2 also has a larger diameter of 103mm compared to the Zeiss Loxia 85mm F2.4's 63mm 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. Zeiss Loxia 85mm F2.4 weighs 594g, 55% (746g) lighter than the Sony FE 50-150mm F2's weight of 1340g.
Filter Threads
The Sony FE 50-150mm F2 has a filter size of 95mm whereas the Zeiss Loxia 85mm F2.4 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 95mm filters that we recommend you to consider for the Sony FE 50-150mm F2:
And these are the 52mm filters that we recommend for the Zeiss Loxia 85mm F2.4:
Lens Mounts
Both the Sony FE 50-150mm F2 and the Zeiss Loxia 85mm F2.4 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.
Focal Range
Sony FE 50-150mm F2 has a focal range of 50-150mm and
3.0X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
75 - 225mm.
On the other hand, the Zeiss Loxia 85mm F2.4 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.