The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Samyang 21mm F1.4 ED AS UMC CS and the Canon 24mm f1.4L II USM 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 24mm f1.4L II USM is the longer of the two lenses at 87mm. The Samyang 21mm F1.4 ED AS UMC CS with a length of 68mm, is 19mm shorter. Besides being longer, the Canon 24mm f1.4L II USM also has a larger diameter of 94mm compared to the Samyang 21mm F1.4 ED AS UMC CS 's 64mm 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 21mm F1.4 ED AS UMC CS weighs 275g, which means it is 375g (57%) lighter than the Canon 24mm f1.4L II USM which has a weight of 650g.
Filter Threads
The Samyang 21mm F1.4 ED AS UMC CS has a filter size of 58mm whereas the Canon 24mm f1.4L II USM has a 77mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 58mm filters that we recommend you to consider for the Samyang 21mm F1.4 ED AS UMC CS :
And these are the 77mm filters that we recommend for the Canon 24mm f1.4L II USM:
Lens Mounts
The Samyang 21mm F1.4 ED AS UMC CS has the Sony E lens mount whereas the Canon 24mm f1.4L II USM has the Canon EF 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 Blackmagic URSA 12K LF, Z CAM E2-F6 II 6K and Z CAM E2-S6 II 6K for the Canon EF Mount.
Samyang 21mm F1.4 ED AS UMC CS is also available in the Canon EF-M , Fujifilm X and Micro Four Thirds mounts.
Focal Range
Samyang 21mm F1.4 ED AS UMC CS is a prime lens with fixed focal lenght of 21mm which has an effective (full-frame 35mm equivalent) focal range of
31.5mm when used on a APS-C / DX format camera.
On the other hand, the Canon 24mm f1.4L II USM is a prime lens with fixed focal lenght of 24mm. When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of 38.4mm.
