The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 10-18mm F2.8 DC DN C and the Samyang 14mm F2.8 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. Samyang 14mm F2.8 is the longer of the two lenses at 96mm. The Sigma 10-18mm F2.8 DC DN C with a length of 64mm, is 32mm shorter. Besides being longer, the Samyang 14mm F2.8 also has a larger diameter of 87mm compared to the Sigma 10-18mm F2.8 DC DN C's 72mm 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. Sigma 10-18mm F2.8 DC DN C weighs 255g, which means it is 297g (53%) lighter than the Samyang 14mm F2.8 which has a weight of 552g.
Lens Mounts
Both the Sigma 10-18mm F2.8 DC DN C and the Samyang 14mm F2.8 has the same Sony E lens mount. Some of the latest released cameras that are compatible with the Sony E lenses are Sony ZV-E10 II, Sony A6700 and Sony FX30.
Sigma 10-18mm F2.8 DC DN C is also available in the Leica L , Fujifilm X and Canon RF mounts.
Samyang 14mm F2.8 is also available in Canon EF , Nikon F (FX), Four Thirds, Pentax KAF, Sony Alpha and Samsung NX mounts.
Focal Range
Sigma 10-18mm F2.8 DC DN C has a focal range of 10-18mm and
1.8X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of
15-27mm when used on a APS-C / DX format camera.
On the other hand, the Samyang 14mm F2.8 is a prime lens with fixed focal lenght of 14mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 21mm.
