The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sony FE 24mm F2.8 G and the Samyang 8mm F3.5 Fisheye 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. Samyang 8mm F3.5 Fisheye is the longer of the two lenses at 77mm. The Sony FE 24mm F2.8 G with a length of 45mm, is 32mm shorter. Besides being longer, the Samyang 8mm F3.5 Fisheye also has a larger diameter of 75mm compared to the Sony FE 24mm F2.8 G's 68mm 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. Sony FE 24mm F2.8 G weighs 162g, which means it is 281g (63%) lighter than the Samyang 8mm F3.5 Fisheye which has a weight of 443g.
Lens Mounts
The Sony FE 24mm F2.8 G has the Sony E lens mount whereas the Samyang 8mm F3.5 Fisheye has the Nikon F (DX) 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 Nikon D3500, Nikon D7500 and Nikon D5600 for the Nikon F (DX) Mount.
Samyang 8mm F3.5 Fisheye is also available in Canon EF , Four Thirds, Pentax KAF, Sony Alpha and Samsung NX mounts.
Focal Range
Sony FE 24mm F2.8 G 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 Samyang 8mm F3.5 Fisheye is a prime lens with fixed focal lenght of 8mm which has an effective (full-frame 35mm equivalent) focal range of 12mm when used on a APS-C / DX format camera.