The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 12mm f1.4 and the Samyang AF 12mm f2 RF-S 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. Sigma 12mm f1.4 is the longer of the two lenses at 70mm. The Samyang AF 12mm f2 RF-S with a length of 63mm, is 7mm shorter. On the other hand, the Samyang AF 12mm f2 RF-S has a larger diameter of 70mm compared to the Sigma 12mm f1.4'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. Samyang AF 12mm f2 RF-S weighs 213g, 9% (22g) lighter than the Sigma 12mm f1.4's weight of 235g.
Filter Threads
Both the Sigma 12mm f1.4 and the Samyang AF 12mm f2 RF-S have the same Filter thread size of 62mm.
Below are links to the 62mm filters that we recommend you to consider for these lenses:
Lens Mounts
The Sigma 12mm f1.4 has the Fujifilm X lens mount whereas the Samyang AF 12mm f2 RF-S has the Canon RF lens mount. Some of the latest released cameras that are compatible with these mounts are Fujifilm X-T30 III, Fujifilm X-E5 and Fujifilm X-M5 for the Fujifilm X Mount and Canon R50 V, Canon R100 and Canon R50 for the Canon RF Mount.
Sigma 12mm f1.4 is also available in the Sony E and Canon RF mounts.
Focal Range
Both lenses have the same focal range of
12mm but while Sigma 12mm f1.4 has the fastest aperture of
F1.4, the Samyang AF 12mm f2 RF-S's widest aperture value is
F2.0.
