Comparison of Nikon 14mm f/2.8D ED AF Nikkor and Samyang/Rokinon 14mm ƒ/2.8 IF ED UMC

Attribute	Samyang/Rokinon 14mm ƒ/2.8 IF ED UMC ×	Nikon 14mm f/2.8D ED AF Nikkor ×
Brand	Samyangrokinon	Nikon
Name	Samyang/Rokinon 14mm ƒ/2.8 IF ED UMC	Nikon 14mm f/2.8D ED AF Nikkor
Focal Length (mm)	14.00	14.00
Image Circle	35mm	35mm
Diaphragm Blades	6	7
APS Equivalent	1.5x: 21mm; 1.6x: 22.4mm	21mm
Focus Details	Manual focus only; Internal	Rear Focusing
Length (mm)	96.1	84
Magnification Ratio (x)	-	0.15
Closest Focus (m)	0.28	0.2
Notes	Available Lens Mounts: Canon EF, Nikon F, Pentax K, Samsung NX, Sony A, Olympus Four Thirds; Included Accessories: lens cap, lens pouch.	Included Accessories: Soft case. Lens Hood: Built-in Flower type
Aperture (f)	2.80 - 22.00	2.80 - 22.00
Diagonal Angle of View (degree)	115.70	114.00
Weight (g)	555	670
Lens Construction	14 elements in 12 groups, including 1 glass aspherical, 1 hybrid aspherical, and 2 ED elements	14 elements in 12 groups, including 1 ED and 2 aspherical elements
Type	Wide Prime	Wide Prime
Diameter (mm)	87	86