The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sony 16mm F2.8 Fisheye 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 16mm F2.8 Fisheye with a length of 67mm, is 10mm shorter. On the other hand, there is no difference between the max diameters of these lenses, both coming at 75mm.
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 16mm F2.8 Fisheye weighs 400g, which means it is 43g (9%) lighter than the Samyang 8mm F3.5 Fisheye which has a weight of 443g.
Below you can find the dimension and weight table of the Wideangle Fisheye Prime Lenses in Sony Alpha Mount for size comparison purposes.
Ultra-Wideangle Lenses in Sony Alpha Mount for Size Comparison
Lens Mounts
Both the Sony 16mm F2.8 Fisheye and the Samyang 8mm F3.5 Fisheye has the same Sony Alpha lens mount. Some of the latest released cameras that are compatible with the Sony Alpha lenses are Sony A99 II, Sony A68 and Sony A77 II.
Samyang 8mm F3.5 Fisheye is also available in Canon EF , Nikon F (DX), Four Thirds, Pentax KAF and Samsung NX mounts.
Focal Range
Sony 16mm F2.8 Fisheye is a prime lens with fixed focal lenght of 16mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
24mm.
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.
