The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Rokinon 85mm F1.8 and the Sony FE 70-200mm F4 G 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 70-200mm F4 G is the longer of the two lenses at 175mm. The Rokinon 85mm F1.8 with a length of 81mm, is 94mm shorter. Besides being longer, the Sony FE 70-200mm F4 G also has a larger diameter of 80mm compared to the Rokinon 85mm F1.8's 68mm 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. Rokinon 85mm F1.8 weighs 344g, which means it is 496g (59%) lighter than the Sony FE 70-200mm F4 G which has a weight of 840g.
Filter Threads
The Rokinon 85mm F1.8 has a filter size of 62mm whereas the Sony FE 70-200mm F4 G 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 62mm filters that we recommend you to consider for the Rokinon 85mm F1.8:
And these are the 72mm filters that we recommend for the Sony FE 70-200mm F4 G:
Lens Mounts
Both the Rokinon 85mm F1.8 and the Sony FE 70-200mm F4 G has the same Sony E lens mount. Some of the latest released cameras that are compatible with the Sony E lenses are Sony ZV-E10 II, Sony A6700 and Sony FX30.
Rokinon 85mm F1.8 is also available in the Canon EF-M and Fujifilm X mounts.
Focal Range
Rokinon 85mm F1.8 is a prime lens with fixed focal lenght of 85mm which has an effective (full-frame 35mm equivalent) focal range of
127.5mm when used on a APS-C / DX format camera.
On the other hand, the Sony FE 70-200mm F4 G has a focal range of 70-200mm and 2.9X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 105 - 300mm.
