The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Nikon 10-24mm f3-5-4.5G ED and the Sigma 10-20mm F4-5.6 EX DC HSM 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 10-24mm f3-5-4.5G ED is the longer of the two lenses at 87mm. The Sigma 10-20mm F4-5.6 EX DC HSM with a length of 81mm, is 6mm shorter. On the other hand, the Sigma 10-20mm F4-5.6 EX DC HSM has a larger diameter of 84mm compared to the Nikon 10-24mm f3-5-4.5G ED's 83mm 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 10-24mm f3-5-4.5G ED weighs 460g, which means it is 10g (2%) lighter than the Sigma 10-20mm F4-5.6 EX DC HSM which has a weight of 470g.
Below you can find the dimension and weight table of the Wideangle Zoom Lenses in Nikon F (DX) Mount for size comparison purposes.
Ultra-Wideangle Lenses in Nikon F (DX) Mount for Size Comparison
Filter Threads
Both the Nikon 10-24mm f3-5-4.5G ED and the Sigma 10-20mm F4-5.6 EX DC HSM have the same Filter thread size of 77mm.
Below are links to the 77mm filters that we recommend you to consider for these lenses:
Lens Mounts
Both the Nikon 10-24mm f3-5-4.5G ED and the Sigma 10-20mm F4-5.6 EX DC HSM has the same Nikon F (DX) lens mount. Some of the latest released cameras that are compatible with the Nikon F (DX) lenses are Nikon D3500, Nikon D7500 and Nikon D5600.
Sigma 10-20mm F4-5.6 EX DC HSM is also available in Canon EF , Four Thirds, Pentax KAF, Sony Alpha and Sigma SA mounts.
Focal Range
Nikon 10-24mm f3-5-4.5G ED has a focal range of 10-24mm and
2.4X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of
15-36mm when used on a APS-C / DX format camera.
On the other hand, the Sigma 10-20mm F4-5.6 EX DC HSM has a focal range of 10-20mm and 2.0X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 15-30mm when used on a APS-C / DX format camera.