The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 18-50mm F2.8-4.5 DC OS HSM and the Nikon 35mm f1.8G 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. Sigma 18-50mm F2.8-4.5 DC OS HSM is the longer of the two lenses at 89mm. The Nikon 35mm f1.8G with a length of 53mm, is 36mm shorter. Besides being longer, the Sigma 18-50mm F2.8-4.5 DC OS HSM also has a larger diameter of 74mm compared to the Nikon 35mm f1.8G's 70mm 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 35mm f1.8G weighs 200g, 49% (195g) lighter than the Sigma 18-50mm F2.8-4.5 DC OS HSM's weight of 395g.
Filter Threads
The Sigma 18-50mm F2.8-4.5 DC OS HSM has a filter size of 67mm whereas the Nikon 35mm f1.8G 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 67mm filters that we recommend you to consider for the Sigma 18-50mm F2.8-4.5 DC OS HSM:
And these are the 52mm filters that we recommend for the Nikon 35mm f1.8G:
Lens Mounts
The Sigma 18-50mm F2.8-4.5 DC OS HSM has the Pentax KAF3 lens mount whereas the Nikon 35mm f1.8G has the Nikon F (DX) lens mount. Some of the latest released cameras that are compatible with these mounts are , and for the Pentax KAF3 Mount and Nikon D3500, Nikon D7500 and Nikon D5600 for the Nikon F (DX) Mount.
Sigma 18-50mm F2.8-4.5 DC OS HSM is also available in the Canon EF , Sony Alpha, Sigma SA and Nikon F (DX) mounts.
Nikon 35mm f1.8G is also available in Nikon F (FX) mount.
Focal Range
Sigma 18-50mm F2.8-4.5 DC OS HSM has a focal range of 18-50mm and
2.8X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of
27-75mm when used on a APS-C / DX format camera.
On the other hand, the Nikon 35mm f1.8G is a prime lens with fixed focal lenght of 35mm which has an effective (full-frame 35mm equivalent) focal range of 52.5mm when used on a APS-C / DX format camera.
