The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sony 70-200mm F2.8 G and the Rokinon 85mm F1.4 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 70-200mm F2.8 G is the longer of the two lenses at 197mm. The Rokinon 85mm F1.4 with a length of 75mm, is 122mm shorter. Besides being longer, the Sony 70-200mm F2.8 G also has a larger diameter of 87mm compared to the Rokinon 85mm F1.4's 78mm 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 F1.4 weighs 539g, 64% (961g) lighter than the Sony 70-200mm F2.8 G's weight of 1500g.
Filter Threads
The Sony 70-200mm F2.8 G has a filter size of 77mm whereas the Rokinon 85mm F1.4 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 77mm filters that we recommend you to consider for the Sony 70-200mm F2.8 G:
And these are the 72mm filters that we recommend for the Rokinon 85mm F1.4:
Lens Mounts
Both the Sony 70-200mm F2.8 G and the Rokinon 85mm F1.4 has the same Sony Alpha lens mount. Some of the latest released cameras that are compatible with the Sony Alpha lenses are Sony A99 II, Sony A68 and Sony A77 II.
Rokinon 85mm F1.4 is also available in Canon EF , Four Thirds, Pentax KAF, Samsung NX and Nikon F (FX) mounts.
Focal Range
Sony 70-200mm F2.8 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.
On the other hand, the Rokinon 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.
