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 Nikon 24mm f2.8D 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. Nikon 20mm f1.8G ED is the longer of the two lenses at 81mm. The Nikon 24mm f2.8D with a length of 46mm, is 35mm shorter. Besides being longer, the Nikon 20mm f1.8G ED also has a larger diameter of 83mm compared to the Nikon 24mm f2.8D's 65mm 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 24mm f2.8D weighs 270g, 23% (85g) lighter than the Nikon 20mm f1.8G ED's weight of 355g.
Filter Threads
The Nikon 20mm f1.8G ED has a filter size of 77mm whereas the Nikon 24mm f2.8D has a 52mm 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 52mm filters that we recommend for the Nikon 24mm f2.8D:
Lens Mounts
The Nikon 20mm f1.8G ED has the Nikon F (DX) lens mount whereas the Nikon 24mm f2.8D 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.
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 Nikon 24mm f2.8D 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.