The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 16-28mm F2.8 E and the Sony 12-24mm F2.8 GM 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 12-24mm F2.8 GM is the longer of the two lenses at 137mm. The Sigma 16-28mm F2.8 E with a length of 101mm, is 36mm shorter. Besides being longer, the Sony 12-24mm F2.8 GM also has a larger diameter of 98mm compared to the Sigma 16-28mm F2.8 E's 77mm diameter.
Below you can find a scaled side-by-side image of Sigma 16-28mm F2.8 E and Sony 12-24mm F2.8 GM to get a better idea of how their sizes compare in real life.
Comparison image of the Sigma 16-28mm F2.8 E and the Sony 12-24mm F2.8 GM Size and Weight 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. Sigma 16-28mm F2.8 E weighs 450g, which means it is 397g (46%) lighter than the Sony 12-24mm F2.8 GM which has a weight of 847g.
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 Sigma 16-28mm F2.8 E and the Sony 12-24mm F2.8 GM has the same Sony E lens mount. Some of the latest released cameras that are compatible with the Sony E lenses are Sony A7R V, Sony FX30 and Sony A7 IV.
Focal Range
Sigma 16-28mm F2.8 E has a focal range of 16-28mm and 1.8X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 24 - 42mm.
Sony 12-24mm F2.8 GM 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.