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 Viltrox 75mm f1.2 AF 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 Viltrox 75mm f1.2 AF with a length of 101mm, is 99mm shorter. Besides being longer, the Sony FE 50-150mm F2 also has a larger diameter of 103mm compared to the Viltrox 75mm f1.2 AF's 87mm 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 75mm f1.2 AF weighs 670g, 50% (670g) 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 Viltrox 75mm f1.2 AF has a 77mm 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 77mm filters that we recommend for the Viltrox 75mm f1.2 AF:
Lens Mounts
Both the Sony FE 50-150mm F2 and the Viltrox 75mm f1.2 AF 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.
Viltrox 75mm f1.2 AF is also available in Fujifilm X and Nikon Z mounts.
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 Viltrox 75mm f1.2 AF is a prime lens with fixed focal lenght of 75mm which has an effective (full-frame 35mm equivalent) focal range of 112.5mm when used on a APS-C / DX format camera.
