Size and Weight Comparison
Size of a lens is an important deciding factor when comparing two lenses.Samyang Premium MF 14mm F2.4 is the longer of the two lenses at 109mm. The Samyang 14mm F2.8 with a length of 96mm is 13mm shorter. Besides being longer, the Samyang Premium MF 14mm F2.4 also has a larger diameter of 95mm compared to Samyang 14mm F2.8's 87mm diameter.
Weight of a lens is as important as its external dimensions, especially if you are planning to hand hold your camera and lens combination for longer periods. Samyang 14mm F2.8 weighs 552g, 43% (239g) lighter than the Samyang Premium MF 14mm F2.4's weight of 791g.
Below you can find the dimension and weight table of the 'Wideangle Prime Lenses in Canon EF Mount for size comparison purposes.
Wideangle Prime Lenses in Canon EF Mount for Size Comparison
Both Samyang Premium MF 14mm F2.4 and Samyang 14mm F2.8 has the same Canon EF lens mount. Some of the latest released cameras that are compatible with the Canon EF lenses are Canon 1D X III, Canon 6D MII and Canon 5D MIV.
Samyang 14mm F2.8 is also available in Nikon F (FX) , Four Thirds, Pentax KAF, Sony Alpha, Sony E and Samsung NX mounts.