The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Zeiss Loxia 25mm F2.4 and the Samyang AF 24mm F2.8 FE 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 Samyang AF 24mm F2.8 FE with a length of 37mm, is 38mm shorter. Besides being longer, the Zeiss Loxia 25mm F2.4 also has a larger diameter of 62mm compared to the Samyang AF 24mm F2.8 FE's 61mm diameter.
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Below you can find a scaled side-by-side image of Zeiss Loxia 25mm F2.4 and Samyang AF 24mm F2.8 FE 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. Samyang AF 24mm F2.8 FE weighs 93g, 76% (300g) lighter than the Zeiss Loxia 25mm F2.4's weight of 393g.
Below you can find the dimension and weight table of the Wideangle Prime Lenses in Sony E Mount for size comparison purposes.
Wideangle Lenses in Sony E Mount for Size Comparison
Filter Threads
The Zeiss Loxia 25mm F2.4 has a filter size of 52mm whereas the Samyang AF 24mm F2.8 FE has a 49mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 52mm filters that we recommend you to consider for the Zeiss Loxia 25mm F2.4:
And these are the 49mm filters that we recommend for the Samyang AF 24mm F2.8 FE:
Lens Mounts
Both the Zeiss Loxia 25mm F2.4 and the Samyang AF 24mm F2.8 FE has the same Sony E lens mount. Some of the latest released cameras that are compatible with the Sony E lenses are Sony A9 III, Sony A7C Mark II and Sony A7CR.
Focal Range
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.
On the other hand, the Samyang AF 24mm F2.8 FE is a prime lens with fixed focal lenght of 24mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 36mm.