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 Sony FE 20mm F1.8 G 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. Tamron 17-50mm f4 Di III VXD is the longer of the two lenses at 114mm. The Sony FE 20mm F1.8 G with a length of 85mm, is 29mm shorter. Besides being longer, the Tamron 17-50mm f4 Di III VXD also has a larger diameter of 75mm compared to the Sony FE 20mm F1.8 G's 74mm diameter.
Below you can find a scaled side-by-side image of Tamron 17-50mm f4 Di III VXD and Sony FE 20mm F1.8 G 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 Sony FE 20mm F1.8 G 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. Sony FE 20mm F1.8 G weighs 373g, 18% (87g) lighter than the Tamron 17-50mm f4 Di III VXD's weight of 460g.
Filter Threads
Both the Tamron 17-50mm f4 Di III VXD and the Sony FE 20mm F1.8 G have the same Filter thread size of 67mm .
Below are links to the 67mm filters that we recommend you to consider for these lenses:
Lens Mounts
Both the Tamron 17-50mm f4 Di III VXD and the Sony FE 20mm F1.8 G 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 .
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 Sony FE 20mm F1.8 G is a prime lens with fixed focal lenght of 20mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 30mm .
