The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sony 75-300mm F4.5-5.6 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 75-300mm F4.5-5.6 is the longer of the two lenses at 122mm. The Rokinon 85mm F1.4 with a length of 75mm, is 47mm shorter. On the other hand, the Rokinon 85mm F1.4 has a larger diameter of 78mm compared to the Sony 75-300mm F4.5-5.6's 71mm 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. Sony 75-300mm F4.5-5.6 weighs 460g, which means it is 79g (14%) lighter than the Rokinon 85mm F1.4 which has a weight of 539g.
Filter Threads
The Sony 75-300mm F4.5-5.6 has a filter size of 55mm 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 55mm filters that we recommend you to consider for the Sony 75-300mm F4.5-5.6:
And these are the 72mm filters that we recommend for the Rokinon 85mm F1.4:
Lens Mounts
Both the Sony 75-300mm F4.5-5.6 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 75-300mm F4.5-5.6 has a focal range of 75-300mm and
4.0X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
112.5 - 450mm.
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.
