The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 30mm F1.4 C and the Zeiss Loxia 25mm F2.4 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. Zeiss Loxia 25mm F2.4 is the longer of the two lenses at 75mm. The Sigma 30mm F1.4 C with a length of 73mm, is 2mm shorter. On the other hand, the Sigma 30mm F1.4 C has a larger diameter of 65mm compared to the Zeiss Loxia 25mm F2.4's 62mm diameter.
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Below you can find a scaled side-by-side image of Sigma 30mm F1.4 C and Zeiss Loxia 25mm F2.4 to get a better idea of how their sizes compare in real life.
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 30mm F1.4 C weighs 265g, which means it is 128g (32%) lighter than the Zeiss Loxia 25mm F2.4 which has a weight of 393g.
Filter Threads
Both the Sigma 30mm F1.4 C and the Zeiss Loxia 25mm F2.4 have the same Filter thread size of 52mm.
Below are links to the 52mm filters that we recommend you to consider for these lenses:
Lens Mounts
Both the Sigma 30mm F1.4 C and the Zeiss Loxia 25mm F2.4 has the same Sony E lens mount. Some of the latest released cameras that are compatible with the Sony E lenses are Sony A6700, Sony FX30 and Sony ZV-E10.
Sigma 30mm F1.4 C is also available in Micro Four Thirds , Fujifilm X and Nikon Z mounts.
Focal Range
Sigma 30mm F1.4 C is a prime lens with fixed focal lenght of 30mm which has an effective (full-frame 35mm equivalent) focal range of
45mm when used on a APS-C / DX format camera.
On the other hand, the Zeiss Loxia 25mm F2.4 is a prime lens with fixed focal lenght of 25mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 37.5mm.