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 MF 14mm F2.8 RF 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 MF 14mm F2.8 RF is the longer of the two lenses at 120mm. The Sigma 10-18mm F2.8 DC DN C with a length of 64mm, is 56mm shorter. Besides being longer, the Samyang MF 14mm F2.8 RF 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 555g (68%) lighter than the Samyang MF 14mm F2.8 RF which has a weight of 810g.
Lens Mounts
Both the Sigma 10-18mm F2.8 DC DN C and the Samyang MF 14mm F2.8 RF has the same Canon RF lens mount. Some of the latest released cameras that are compatible with the Canon RF lenses are Canon R50 V, Canon R100 and Canon R50.
Sigma 10-18mm F2.8 DC DN C is also available in the Sony E , Leica L and Fujifilm X 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
16-28.8mm when used on a APS-C / DX format camera.
On the other hand, the Samyang MF 14mm F2.8 RF is a prime lens with fixed focal lenght of 14mm.