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 Fujifilm 16-55mm F2.8 II 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. Fujifilm 16-55mm F2.8 II is the longer of the two lenses at 95mm. The Sigma 18-50mm F2.8-4.5 DC OS HSM with a length of 89mm, is 6mm shorter. Besides being longer, the Fujifilm 16-55mm F2.8 II also has a larger diameter of 78mm compared to the Sigma 18-50mm F2.8-4.5 DC OS HSM's 74mm 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. Sigma 18-50mm F2.8-4.5 DC OS HSM weighs 395g, which means it is 15g (3%) lighter than the Fujifilm 16-55mm F2.8 II which has a weight of 410g.
Filter Threads
The Sigma 18-50mm F2.8-4.5 DC OS HSM has a filter size of 67mm whereas the Fujifilm 16-55mm F2.8 II has a 72mm 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 72mm filters that we recommend for the Fujifilm 16-55mm F2.8 II:
Lens Mounts
The Sigma 18-50mm F2.8-4.5 DC OS HSM has the Sigma SA lens mount whereas the Fujifilm 16-55mm F2.8 II has the Fujifilm X lens mount. Some of the latest released cameras that are compatible with these mounts are Sigma SD1 Merrill, Sigma SD1 and for the Sigma SA Mount and Fujifilm X-T30 III, Fujifilm X-E5 and Fujifilm X-M5 for the Fujifilm X Mount.
Sigma 18-50mm F2.8-4.5 DC OS HSM is also available in the Canon EF , Pentax KAF3, Sony Alpha and Nikon F (DX) mounts.
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 Fujifilm 16-55mm F2.8 II has a focal range of 16-55mm and 3.4X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 24-82.5mm when used on a APS-C / DX format camera.
