The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Samyang AF 24mm F2.8 FE and the Sigma 30mm F2.8 EX DN 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. Sigma 30mm F2.8 EX DN is the longer of the two lenses at 39mm. The Samyang AF 24mm F2.8 FE with a length of 37mm, is 2mm shorter. On the other hand, there is no difference between the max diameters of these lenses, both coming at 61mm.
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, which means it is 42g (31%) lighter than the Sigma 30mm F2.8 EX DN which has a weight of 135g.
Filter Threads
The Samyang AF 24mm F2.8 FE has a filter size of 49mm whereas the Sigma 30mm F2.8 EX DN has a 46mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 49mm filters that we recommend you to consider for the Samyang AF 24mm F2.8 FE:
And these are the 46mm filters that we recommend for the Sigma 30mm F2.8 EX DN:
Lens Mounts
Both the Samyang AF 24mm F2.8 FE and the Sigma 30mm F2.8 EX DN 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.
Sigma 30mm F2.8 EX DN is also available in Micro Four Thirds mount.
Focal Range
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.
On the other hand, the Sigma 30mm F2.8 EX DN 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.