The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Tamron 12-20mm f2.8 and the Sony FE 14mm F1.8 GM 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 12-20mm f2.8 is the longer of the two lenses at 119mm. The Sony FE 14mm F1.8 GM with a length of 100mm, is 19mm shorter. Besides being longer, the Tamron 12-20mm f2.8 also has a larger diameter of 90mm compared to the Sony FE 14mm F1.8 GM's 83mm diameter.
Below you can find a scaled side-by-side image of Tamron 12-20mm f2.8 and Sony FE 14mm F1.8 GM to get a better idea of how their sizes compare in real life.
Comparison image of the Tamron 12-20mm f2.8 and the Sony FE 14mm F1.8 GM 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 14mm F1.8 GM weighs 460g, 19% (110g) lighter than the Tamron 12-20mm f2.8's weight of 570g.
Lens Mounts
Both the Tamron 12-20mm f2.8 and the Sony FE 14mm F1.8 GM 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 12-20mm f2.8 has a focal range of 12-20mm 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
18 - 30mm .
On the other hand, the Sony FE 14mm F1.8 GM is a prime lens with fixed focal lenght of 14mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 21mm .
