The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Tamron 17-28mm F2.8 Di III and the Sony FE 12-24mm F4 G for their suitability to various photography scenarios:
Size and Weight Comparison
The size of a lens is an important deciding factor when comparing two lenses. Sony FE 12-24mm F4 G is the longer of the two lenses at 117mm. The Tamron 17-28mm F2.8 Di III with a length of 99mm, is 18mm shorter. Besides being longer, the Sony FE 12-24mm F4 G also has a larger diameter of 87mm compared to the Tamron 17-28mm F2.8 Di III's 73mm diameter.
The weight of a lens is as important as its external dimensions, especially if you are planning to hand hold your camera and lens combination for longer periods. Tamron 17-28mm F2.8 Di III weighs 420g, which means it is 145g (25%) lighter than the Sony FE 12-24mm F4 G which has a weight of 565g.
Below you can find the dimension and weight table of the Wideangle Zoom Lenses in Sony E Mount for size comparison purposes.
Wideangle Zoom Lenses in Sony E Mount for Size Comparison
Lens Mounts
Both the Tamron 17-28mm F2.8 Di III and the Sony FE 12-24mm F4 G has the same Sony E lens mount. Some of the latest released cameras that are compatible with the Sony E lenses are Sony ZV-E1, Sony A7R V and Sony FX30.
Focal Range
Tamron 17-28mm F2.8 Di III has a focal range of 17-28mm and 1.6X 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 - 42mm.
Sony FE 12-24mm F4 G has a focal range of 12-24mm and 2.0X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 18 - 36mm.