The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Nikon 20mm f1.8G ED and the Carl Zeiss Distagon T2/25 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 T2/25 is the longer of the two lenses at 95mm. The Nikon 20mm f1.8G ED with a length of 81mm, is 14mm shorter. On the other hand, the Nikon 20mm f1.8G ED has a larger diameter of 83mm compared to the Carl Zeiss Distagon T2/25's 71mm 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. Nikon 20mm f1.8G ED weighs 355g, which means it is 215g (37%) lighter than the Carl Zeiss Distagon T2/25 which has a weight of 570g.
Filter Threads
The Nikon 20mm f1.8G ED has a filter size of 77mm whereas the Carl Zeiss Distagon T2/25 has a 67mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 77mm filters that we recommend you to consider for the Nikon 20mm f1.8G ED:
And these are the 67mm filters that we recommend for the Carl Zeiss Distagon T2/25:
Lens Mounts
The Nikon 20mm f1.8G ED has the Nikon F (DX) lens mount whereas the Carl Zeiss Distagon T2/25 has the Nikon F (FX) lens mount. Some of the latest released cameras that are compatible with these mounts are Nikon D6, Nikon D780 and Nikon D3500 for the Nikon F (DX) Mount and Nikon D6, Nikon D780 and Nikon D3500 for the Nikon F (FX) Mount.
Carl Zeiss Distagon T2/25 is also available in Canon EF mount.
Focal Range
Nikon 20mm f1.8G ED 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.
On the other hand, the Carl Zeiss Distagon T2/25 is a prime lens with fixed focal lenght of 25mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 37.5mm.