The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 12mm f1.4 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. Sony FE 14mm F1.8 GM is the longer of the two lenses at 100mm. The Sigma 12mm f1.4 with a length of 69mm, is 31mm shorter. Besides being longer, the Sony FE 14mm F1.8 GM also has a larger diameter of 83mm compared to the Sigma 12mm f1.4's 68mm diameter.
Below you can find a scaled side-by-side image of Sigma 12mm f1.4 and Sony FE 14mm F1.8 GM to get a better idea of how their sizes compare in real life.
Comparison image of the Sigma 12mm f1.4 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. Sigma 12mm f1.4 weighs 225g, which means it is 235g (51%) lighter than the Sony FE 14mm F1.8 GM which has a weight of 460g.
Below you can find the dimension and weight table of the Wideangle Prime Lenses in Sony E Mount for size comparison purposes.
Ultra-Wideangle Sony E Mount
Lens Mounts
Both the Sigma 12mm f1.4 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 ZV-E10 II , Sony A6700 and Sony FX30 .
Fujifilm X and Canon RF mounts.
Focal Range
Sigma 12mm f1.4 is a prime lens with fixed focal lenght of 12mm which has an effective (full-frame 35mm equivalent) focal range of
18mm when used on a APS-C / DX format camera.
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 .
