The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sony E 20mm F2.8 and the Samyang T-S 24mm f3.5 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 Sony E 20mm F2.8 with a length of 20mm, is 92mm shorter. Besides being longer, the Samyang T-S 24mm f3.5 also has a larger diameter of 86mm compared to the Sony E 20mm F2.8's 63mm 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 E 20mm F2.8 weighs 69g, which means it is 611g (89%) lighter than the Samyang T-S 24mm f3.5 which has a weight of 680g.
Filter Threads
The Sony E 20mm F2.8 has a filter size of 49mm whereas the Samyang T-S 24mm f3.5 has a 82mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 49mm filters that we recommend you to consider for the Sony E 20mm F2.8:
And these are the 82mm filters that we recommend for the Samyang T-S 24mm f3.5:
Lens Mounts
Both the Sony E 20mm F2.8 and the Samyang T-S 24mm f3.5 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.
Samyang T-S 24mm f3.5 is also available in Canon EF , Nikon F (FX), Pentax KAF and Sony Alpha mounts.
Focal Range
Sony E 20mm F2.8 is a prime lens with fixed focal lenght of 20mm which has an effective (full-frame 35mm equivalent) focal range of
30mm when used on a APS-C / DX format camera.
On the other hand, the 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.