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 DC DN C and the Fujifilm 16-55mm F2.8 R LM WR 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 R LM WR is the longer of the two lenses at 106mm. The Sigma 18-50mm F2.8 DC DN C with a length of 75mm, is 31mm shorter. Besides being longer, the Fujifilm 16-55mm F2.8 R LM WR also has a larger diameter of 83mm compared to the Sigma 18-50mm F2.8 DC DN C's 65mm diameter.
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Below you can find a scaled side-by-side image of Sigma 18-50mm F2.8 DC DN C and Fujifilm 16-55mm F2.8 R LM WR to get a better idea of how their sizes compare in real life.
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 DC DN C weighs 290g, which means it is 365g (55%) lighter than the Fujifilm 16-55mm F2.8 R LM WR which has a weight of 655g.
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Filter Threads
The Sigma 18-50mm F2.8 DC DN C has a filter size of 55mm whereas the Fujifilm 16-55mm F2.8 R LM WR has a 77mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 55mm filters that we recommend you to consider for the Sigma 18-50mm F2.8 DC DN C:
And these are the 77mm filters that we recommend for the Fujifilm 16-55mm F2.8 R LM WR:
Lens Mounts
The Sigma 18-50mm F2.8 DC DN C has the Leica L lens mount whereas the Fujifilm 16-55mm F2.8 R LM WR has the Fujifilm X lens mount. Some of the latest released cameras that are compatible with these mounts are Leica TL2, Leica TL and Leica T Typ 701 for the Leica L Mount and Fujifilm X-S20, Fujifilm X-T5 and Fujifilm X-H2 for the Fujifilm X Mount.
Sigma 18-50mm F2.8 DC DN C is also available in Sony E and Fujifilm X mounts.
Focal Range
Sigma 18-50mm F2.8 DC DN C 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 R LM WR 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.