The type of photography that you are planning to use is an important decision factor. Here we have evaluated the 7artisans 10mm f2.8 II E and the Samyang 12mm f2.0 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. 7artisans 10mm f2.8 II E is the longer of the two lenses at 95mm. The Samyang 12mm f2.0 with a length of 59mm, is 36mm shorter. Besides being longer, the 7artisans 10mm f2.8 II E also has a larger diameter of 75mm compared to the Samyang 12mm f2.0's 73mm diameter.
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 12mm f2.0 weighs 260g, 56% (342g) lighter than the 7artisans 10mm f2.8 II E's weight of 602g.
Lens Mounts
The 7artisans 10mm f2.8 II E has the Sony E lens mount whereas the Samyang 12mm f2.0 has the Fujifilm X lens mount. Some of the latest released cameras that are compatible with these mounts are Sony FX5, Sony A7R VI and Sony A7 V for the Sony E Mount and Fujifilm X-T30 III, Fujifilm X-E5 and Fujifilm X-M5 for the Fujifilm X Mount.
Samyang 12mm f2.0 is also available in Canon EF-M , Micro Four Thirds, Sony E and Samsung NX mounts.
Focal Range
7artisans 10mm f2.8 II E is a prime lens with fixed focal lenght of 10mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
15mm.
On the other hand, the Samyang 12mm f2.0 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.