The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Rokinon T-S 24mm f3.5 and the Carl Zeiss Distagon T2/28 for their suitability to various photography scenarios:
Size and Weight Comparison
The size of a lens is an important deciding factor when comparing two lenses. Rokinon T-S 24mm f3.5 is the longer of the two lenses at 112mm. The Carl Zeiss Distagon T2/28 with a length of 93mm, is 19mm shorter. Besides being longer, the Rokinon T-S 24mm f3.5 also has a larger diameter of 86mm compared to the Carl Zeiss Distagon T2/28's 64mm diameter.
The weight of a lens is as important as its external dimensions, especially if you are planning to hand hold your camera and lens combination for longer periods. Carl Zeiss Distagon T2/28 weighs 520g, 23% (160g) lighter than the Rokinon T-S 24mm f3.5's weight of 680g.
Lens Mounts
Both the Rokinon T-S 24mm f3.5 and the Carl Zeiss Distagon T2/28 has the same Nikon F (FX) lens mount. Some of the latest released cameras that are compatible with the Nikon F (FX) lenses are Nikon D6, Nikon D780 and Nikon D3500.
Rokinon T-S 24mm f3.5 is also available in Canon EF and Sony Alpha mounts.
Carl Zeiss Distagon T2/28 is also available in Canon EF and Pentax KAF mounts.
Focal Range
Rokinon 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.
Carl Zeiss Distagon T2/28 is a prime lens with fixed focal lenght of 28mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 42mm.