The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Samyang 300mm f6.3 and the Canon 50mm f2.5 Macro 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 300mm f6.3 is the longer of the two lenses at 74mm. The Canon 50mm f2.5 Macro with a length of 63mm, is 11mm shorter. On the other hand, the Canon 50mm f2.5 Macro has a larger diameter of 68mm compared to the Samyang 300mm f6.3's 65mm 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. Canon 50mm f2.5 Macro weighs 280g, 11% (38g) lighter than the Samyang 300mm f6.3's weight of 318g.
Lens Mounts
The Samyang 300mm f6.3 has the Canon EF-M lens mount whereas the Canon 50mm f2.5 Macro has the Canon EF lens mount. Some of the latest released cameras that are compatible with these mounts are , and for the Canon EF-M Mount and Canon 1D X III, Canon 6D MII and Canon 5D MIV for the Canon EF Mount.
Samyang 300mm f6.3 is also available in Fujifilm X , Micro Four Thirds and Sony E mounts.
Focal Range
Samyang 300mm f6.3 is a prime lens with fixed focal lenght of 300mm which has an effective (full-frame 35mm equivalent) focal range of
450mm when used on a APS-C / DX format camera.
On the other hand, the Canon 50mm f2.5 Macro is a prime lens with fixed focal lenght of 50mm. When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of 80mm.