Size and Weight Comparison
The size of a lens is a crucial factor to consider when comparing two lenses. Sigma 17mm F4 DG DN C is the longer of the two lenses at 51mm. The Viltrox 26mm f2.8 FE with a length of 24mm, is 27mm shorter. On the other hand, the Viltrox 26mm f2.8 FE has a larger diameter of 66mm compared to the Sigma 17mm F4 DG DN C's 64mm 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. Viltrox 26mm f2.8 FE weighs 130g, which means it is 90g (40%) lighter than the Sigma 17mm F4 DG DN C which has a weight of 220g.
Below you can find the dimension and weight table of the Wideangle Prime Lenses in Sony E Mount for size comparison purposes.
Wideangle Lenses in Sony E Mount for Size Comparison
Filter Threads
The Viltrox 26mm f2.8 FE has a filter size of 43mm whereas the Sigma 17mm F4 DG DN C has a 55mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 43mm filters that we recommend you to consider for the Viltrox 26mm f2.8 FE:
And these are the 55mm filters that we recommend for the Sigma 17mm F4 DG DN C:
Lens Mounts
Both the Viltrox 26mm f2.8 FE and the Sigma 17mm F4 DG DN C has the same Sony E lens mount. Some of the latest released cameras that are compatible with the Sony E lenses are Sony FX5, Sony A7R VI and Sony A7 V.
Sigma 17mm F4 DG DN C is also available in Leica L mount.
Focal Range
Viltrox 26mm f2.8 FE is a prime lens with fixed focal lenght of 26mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
39mm.
On the other hand, the Sigma 17mm F4 DG DN C is a prime lens with fixed focal lenght of 17mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 25.5mm.
