The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sony FE 20mm F1.8 G and the Rokinon 24mm f1.4 for their suitability to various photography scenarios:
Size and Weight Comparison
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 FE 20mm F1.8 G weighs 373g, which means it is 207g (35%) lighter than the Rokinon 24mm f1.4 which has a weight of 580g.
Filter Threads
The Sony FE 20mm F1.8 G has a filter size of 67mm whereas the Rokinon 24mm f1.4 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 67mm filters that we recommend you to consider for the Sony FE 20mm F1.8 G:
And these are the 77mm filters that we recommend for the Rokinon 24mm f1.4:
Lens Mounts
The Sony FE 20mm F1.8 G has the Sony E lens mount whereas the Rokinon 24mm f1.4 has the Four Thirds lens mount. Some of the latest released cameras that are compatible with these mounts are Sony FX5, Sony A7R VI and Sony A7 V for the Sony E Mount and Olympus E-5, Olympus E-600 and Olympus E-620 for the Four Thirds Mount.
Rokinon 24mm f1.4 is also available in Canon EF , Nikon F (FX), Pentax KAF, Sony Alpha and Samsung NX mounts.
Focal Range
Sony FE 20mm F1.8 G is a prime lens with fixed focal lenght of 20mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
30mm.
On the other hand, the Rokinon 24mm f1.4 is a prime lens with fixed focal lenght of 24mm.
