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 Sony E 16-70mm F4 ZA OSS for their suitability to various photography scenarios:
Size and Weight Comparison
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Below you can find a scaled side-by-side image of Sigma 18-50mm F2.8 DC DN C and Sony E 16-70mm F4 ZA OSS 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 18g (5%) lighter than the Sony E 16-70mm F4 ZA OSS which has a weight of 308g.
Below you can find the dimension and weight table of the Standard Zoom Lenses in Sony E Mount for size comparison purposes.
Standard Lenses in Sony E Mount for Size Comparison
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Filter Threads
Both the Sigma 18-50mm F2.8 DC DN C and the Sony E 16-70mm F4 ZA OSS have the same Filter thread size of 55mm.
Below are links to the 55mm filters that we recommend you to consider for these lenses:
Lens Mounts
Both the Sigma 18-50mm F2.8 DC DN C and the Sony E 16-70mm F4 ZA OSS has the same Sony E lens mount. Some of the latest released cameras that are compatible with the Sony E lenses are Sony A6700, Sony FX30 and Sony ZV-E10.
Sigma 18-50mm F2.8 DC DN C is also available in Leica L 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 Sony E 16-70mm F4 ZA OSS has a focal range of 16-70mm and 4.4X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 24-105mm when used on a APS-C / DX format camera.