The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Carl Zeiss Distagon T2,8/15 and the Rokinon 14mm f2.8 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. Carl Zeiss Distagon T2,8/15 is the longer of the two lenses at 135mm. The Rokinon 14mm f2.8 with a length of 96mm, is 39mm shorter. Besides being longer, the Carl Zeiss Distagon T2,8/15 also has a larger diameter of 103mm compared to the Rokinon 14mm f2.8's 87mm 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. Rokinon 14mm f2.8 weighs 552g, 24% (178g) lighter than the Carl Zeiss Distagon T2,8/15's weight of 730g.
Below you can find the dimension and weight table of the Wideangle Prime Lenses in Nikon F (FX) Mount for size comparison purposes.
Ultra-Wideangle Lenses in Nikon F (FX) Mount for Size Comparison
Lens Mounts
Both the Carl Zeiss Distagon T2,8/15 and the Rokinon 14mm f2.8 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.
Carl Zeiss Distagon T2,8/15 is also available in Canon EF mount.
Rokinon 14mm f2.8 is also available in Canon EF , Four Thirds, Pentax KAF, Sony Alpha and Samsung NX mounts.
Focal Range
Carl Zeiss Distagon T2,8/15 is a prime lens with fixed focal lenght of 15mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
22.5mm.
On the other hand, the Rokinon 14mm f2.8 is a prime lens with fixed focal lenght of 14mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 21mm.