The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Samyang AF 12mm f2 E and the Canon RF 28mm F2.8 STM 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 AF 12mm f2 E is the longer of the two lenses at 65mm. The Canon RF 28mm F2.8 STM with a length of 25mm, is 40mm shorter. Besides being longer, the Samyang AF 12mm f2 E also has a larger diameter of 70mm compared to the Canon RF 28mm F2.8 STM's 69mm diameter.
Below you can find a scaled side-by-side image of Samyang AF 12mm f2 E and Canon RF 28mm F2.8 STM to get a better idea of how their sizes compare in real life.
Comparison image of the Samyang AF 12mm f2 E and the Canon RF 28mm F2.8 STM 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. Canon RF 28mm F2.8 STM weighs 120g, 46% (104g) lighter than the Samyang AF 12mm f2 E's weight of 224g.
Filter Threads
The Samyang AF 12mm f2 E has a filter size of 62mm whereas the Canon RF 28mm F2.8 STM has a 55mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 62mm filters that we recommend you to consider for the Samyang AF 12mm f2 E:
And these are the 55mm filters that we recommend for the Canon RF 28mm F2.8 STM:
Lens Mounts
The Samyang AF 12mm f2 E has the Sony E lens mount whereas the Canon RF 28mm F2.8 STM has the Canon RF lens mount . Some of the latest released cameras that are compatible with these mounts are Sony ZV-E10 II , Sony A6700 and Sony FX30 for the Sony E Mount and Canon R6 V , Canon R6 III and Canon C50 for the Canon RF Mount.
Focal Range
Samyang AF 12mm f2 E is a prime lens with fixed focal lenght of 12mm which has an effective (full-frame 35mm equivalent) focal range of
18mm when used on a APS-C / DX format camera.
On the other hand, the Canon RF 28mm F2.8 STM is a prime lens with fixed focal lenght of 28mm. When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of 44.8mm .