The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Fujinon MK 18-55mm T2.9 and the Samyang 20mm F1.8 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. Fujinon MK 18-55mm T2.9 is the longer of the two lenses at 206mm. The Samyang 20mm F1.8 with a length of 88mm, is 118mm shorter. Besides being longer, the Fujinon MK 18-55mm T2.9 also has a larger diameter of 85mm compared to the Samyang 20mm F1.8's 83mm 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 20mm F1.8 weighs 497g, 49% (483g) lighter than the Fujinon MK 18-55mm T2.9's weight of 980g.
Filter Threads
The Fujinon MK 18-55mm T2.9 has a filter size of 82mm whereas the Samyang 20mm F1.8 has a 77mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 82mm filters that we recommend you to consider for the Fujinon MK 18-55mm T2.9:
And these are the 77mm filters that we recommend for the Samyang 20mm F1.8:
Lens Mounts
Both the Fujinon MK 18-55mm T2.9 and the Samyang 20mm F1.8 has the same Sony E lens mount. Some of the latest released cameras that are compatible with the Sony E lenses are Sony FX5, Sony A7R VI and Sony A7 V.
Samyang 20mm F1.8 is also available in Canon EF , Canon EF-M, Fujifilm X, Micro Four Thirds, Nikon F (FX), Pentax KAF, Samsung NX and Sony Alpha mounts.
Focal Range
Fujinon MK 18-55mm T2.9 has a focal range of 18-55mm and
3.1X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
27 - 82.5mm.
On the other hand, the Samyang 20mm F1.8 is a prime lens with fixed focal lenght of 20mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 30mm.
