Comparison of Olympus 7-14mm f/4 Zuiko Digital and Samyang/Rokinon 14mm ƒ/2.8 IF ED UMC

Attribute	Olympus 7-14mm f/4 Zuiko Digital ×	Samyang/Rokinon 14mm ƒ/2.8 IF ED UMC ×
Brand	Olympus	Samyangrokinon
Name	Olympus 7-14mm f/4 Zuiko Digital	Samyang/Rokinon 14mm ƒ/2.8 IF ED UMC
Focal Length (mm)	7.00 - 14.00	14.00
Image Circle	Image Circle	35mm
Length (mm)	119.5	96.1
Diaphragm Blades	7	6
Magnification Ratio (x)	0.11	-
APS Equivalent	-	1.5x: 21mm; 1.6x: 22.4mm
Aperture (f)	4.00 - 22.00	2.80 - 22.00
Notes	Includes Lens Case (LSC-1022); Compatible with TC-14 Teleconverter	Available Lens Mounts: Canon EF, Nikon F, Pentax K, Samsung NX, Sony A, Olympus Four Thirds; Included Accessories: lens cap, lens pouch.
Diagonal Angle of View (degree)	75.00 - 114.00	115.70
Zoom System	Rotary	-
Diameter (mm)	86.5	87
Weight (g)	780	555
Closest Focus (m)	0.25	0.28
Type	Wide Zoom	Wide Prime
Lens Construction	18 elements in 12 groups, including aspherical elements and ED/Super ED elements	14 elements in 12 groups, including 1 glass aspherical, 1 hybrid aspherical, and 2 ED elements
Focus Details	-	Manual focus only; Internal
35mm Equivalent	14 - 28mm	-