The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Samyang T-S 24mm f3.5 and the Tokina Firin 20mm F2 FE MF 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. Samyang T-S 24mm f3.5 is the longer of the two lenses at 112mm. The Tokina Firin 20mm F2 FE MF with a length of 82mm, is 30mm shorter. Besides being longer, the Samyang T-S 24mm f3.5 also has a larger diameter of 86mm compared to the Tokina Firin 20mm F2 FE MF's 69mm 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. Tokina Firin 20mm F2 FE MF weighs 490g, 27% (190g) lighter than the Samyang T-S 24mm f3.5's weight of 680g.
Filter Threads
The Samyang T-S 24mm f3.5 has a filter size of 82mm whereas the Tokina Firin 20mm F2 FE MF has a 62mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 82mm filters that we recommend you to consider for the Samyang T-S 24mm f3.5:
And these are the 62mm filters that we recommend for the Tokina Firin 20mm F2 FE MF:
Lens Mounts
Both the Samyang T-S 24mm f3.5 and the Tokina Firin 20mm F2 FE MF has the same Sony E lens mount. Some of the latest released cameras that are compatible with the Sony E lenses are Sony A9 III, Sony A7C Mark II and Sony A7CR.
Samyang T-S 24mm f3.5 is also available in Canon EF , Nikon F (FX), Pentax KAF and Sony Alpha mounts.
Tokina Firin 20mm F2 FE MF is also available in Sony E mount.
Focal Range
Samyang T-S 24mm f3.5 is a prime lens with fixed focal lenght of 24mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
36mm.
On the other hand, the Tokina Firin 20mm F2 FE MF 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.