The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Carl Zeiss Distagon T2,8/21 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 Carl Zeiss Distagon T2,8/21 with a length of 109mm, is 3mm shorter. On the other hand, the Carl Zeiss Distagon T2,8/21 has a larger diameter of 87mm compared to the Samyang T-S 24mm f3.5's 86mm 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. Carl Zeiss Distagon T2,8/21 weighs 600g, which means it is 80g (11%) lighter than the Samyang T-S 24mm f3.5 which has a weight of 680g.
Filter Threads
Both the Carl Zeiss Distagon T2,8/21 and the Samyang T-S 24mm f3.5 have the same Filter thread size of 82mm.
Below are links to the 82mm filters that we recommend you to consider for these lenses:
Lens Mounts
Both the Carl Zeiss Distagon T2,8/21 and the Samyang T-S 24mm f3.5 has the same Canon EF lens mount. Some of the latest released cameras that are compatible with the Canon EF lenses are Canon 1D X III, Canon 6D MII and Canon 5D MIV.
Carl Zeiss Distagon T2,8/21 is also available in Pentax KAF and Nikon F (FX) mounts.
Samyang T-S 24mm f3.5 is also available in Nikon F (FX) , Pentax KAF, Sony Alpha and Sony E mounts.
Focal Range
Carl Zeiss Distagon T2,8/21 is a prime lens with fixed focal lenght of 21mm. When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of
33.6mm.
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 1.6x crop, it provides a 35mm (FF) equivalent of 38.4mm.