The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Tamron 17-50mm f4 Di III VXD and the Sigma 14-24mm F2.8 DG DN Art 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 14-24mm F2.8 DG DN Art is the longer of the two lenses at 131mm. The Tamron 17-50mm f4 Di III VXD with a length of 114mm, is 17mm shorter. Besides being longer, the Sigma 14-24mm F2.8 DG DN Art also has a larger diameter of 85mm compared to the Tamron 17-50mm f4 Di III VXD's 75mm diameter.
Below you can find a scaled side-by-side image of Tamron 17-50mm f4 Di III VXD and Sigma 14-24mm F2.8 DG DN Art to get a better idea of how their sizes compare in real life.
Comparison image of the Tamron 17-50mm f4 Di III VXD and the Sigma 14-24mm F2.8 DG DN Art Size and Weight 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. Tamron 17-50mm f4 Di III VXD weighs 460g, which means it is 335g (42%) lighter than the Sigma 14-24mm F2.8 DG DN Art which has a weight of 795g.
Below you can find the dimension and weight table of the Wideangle Zoom Lenses in Sony E Mount for size comparison purposes.
Ultra-Wideangle Lenses in Sony E Mount for Size Comparison
Lens Mounts
Both the Tamron 17-50mm f4 Di III VXD and the Sigma 14-24mm F2.8 DG DN Art 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 14-24mm F2.8 DG DN Art is also available in Leica L mount.
Focal Range
Tamron 17-50mm f4 Di III VXD has a focal range of 17-50mm and
3.0X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
25.5 - 75mm .
On the other hand, the Sigma 14-24mm F2.8 DG DN Art has a focal range of 14-24mm and 1.7X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 21 - 36mm .