The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Canon RF 16-28 F2.8 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. Canon RF 16-28 F2.8 is the longer of the two lenses at 91mm. The Samyang AF 12mm f2 RF-S with a length of 63mm, is 28mm shorter. Besides being longer, the Canon RF 16-28 F2.8 also has a larger diameter of 77mm compared to the Samyang AF 12mm f2 RF-S's 70mm diameter.
Below you can find a scaled side-by-side image of Canon RF 16-28 F2.8 and Samyang AF 12mm f2 RF-S to get a better idea of how their sizes compare in real life.
Comparison image of the Canon RF 16-28 F2.8 and the Samyang AF 12mm f2 RF-S Size and Weight 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, 52% (232g) lighter than the Canon RF 16-28 F2.8's weight of 445g.
Filter Threads
The Canon RF 16-28 F2.8 has a filter size of 67mm whereas the Samyang AF 12mm f2 RF-S has a 62mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 67mm filters that we recommend you to consider for the Canon RF 16-28 F2.8:
And these are the 62mm filters that we recommend for the Samyang AF 12mm f2 RF-S:
Lens Mounts
Both the Canon RF 16-28 F2.8 and the Samyang AF 12mm f2 RF-S has the same Canon RF lens mount . Some of the latest released cameras that are compatible with the Canon RF lenses are Canon R6 V , Canon R6 III and Canon C50 .
Focal Range
Canon RF 16-28 F2.8 has a focal range of 16-28mm and
1.8X zoom ratio . When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of
25.6 - 44.8mm .
On the other hand, the Samyang AF 12mm f2 RF-S is a prime lens with fixed focal lenght of 12mm which has an effective (full-frame 35mm equivalent) focal range of 19.2mm when used on a APS-C / DX format camera.