Comparison of Samsung 50-150mm f/2.8 S OIS and Tokina 50-135mm f/2.8 AT-X 535 AF PRO DX

Attribute	Samsung 50-150mm f/2.8 S OIS ×	Tokina 50-135mm f/2.8 AT-X 535 AF PRO DX ×
Aperture (f)	2.80 - 22.00	2.80 - 32.00
Diagonal Angle of View (degree)	10.70 - 31.40	11.13 - 31.05
Filter Size (mm)	72	67
Notes	Samsung NX mount; Optical Image Stabilization; Splash and dust resistant; Tripod mount collar and hood included.	BH-671 Lens Hood; Available AF Mounts: Canon and Nikon Digital Only
Type	Telephoto Zoom	Telephoto Zoom
Closest Focus (m)	0.7	1
APS Equivalent	77 - 231mm	1.5x: 75 - 202.5mm; 1.6x: 80 - 216mm
Diaphragm Blades	-	9
Image Circle	APS-C	APS-C
Focal Length (mm)	50.00 - 150.00	50.00 - 135.00
Brand	Samsung	Tokina
Name	Samsung 50-150mm f/2.8 S OIS	Tokina 50-135mm f/2.8 AT-X 535 AF PRO DX
Weight (g)	915	845
Zoom System	Rotary	Rotary
Lens Construction	20 elements in 13 groups, including 1 XHR (eXtreme High Refractive) and 3 ED elements; SHS (Samsung Hyper Shield Coating)	18 elements in 14 groups, including one SD glass element
Diameter (mm)	81	78.2
Length (mm)	154	135.2
Magnification Ratio (x)	-	0.17
Focus Details	UPSM stepping motor with custom focus range limiter	One-touch focus clutch mechanism