Comparison of Samsung 16-50mm ƒ/2-2.8 S ED OIS NX and Tokina 16-50mm f/2.8 AT-X 165 AF PRO DX

Attribute	Tokina 16-50mm f/2.8 AT-X 165 AF PRO DX ×	Samsung 16-50mm ƒ/2-2.8 S ED OIS NX ×
Notes	Available AF Mounts: Canon, Nikon; Included Accessories: Lens Hood	Samsung NX Mount; Optical Image Stabilization; Lens hood included; i-Function; Splash and dust proof.
Magnification Ratio (x)	0.2	0.19
Filter Size (mm)	77	72
Length (mm)	97.4	96.5
Closest Focus (m)	0.3	0.3
Diagonal Angle of View (degree)	31.00 - 82.00	31.40 - 82.60
Focus Details	Internal with One-Touch Focus Clutch mechanism	UPSM (Ultra-Precise Stepping Motor), silent autofocusing
Focal Length (mm)	16.00 - 50.00	16.00 - 50.00
APS Equivalent	1.5x: 24 - 75mm; 1.6x: 25.6 - 80mm	24.6 - 77mm
Brand	Tokina	Samsung
Image Circle	APS-C	Samsung NX (APS-C)
Name	Tokina 16-50mm f/2.8 AT-X 165 AF PRO DX	Samsung 16-50mm ƒ/2-2.8 S ED OIS NX
Weight (g)	610	622
Type	Standard Zoom	Standard Zoom
Aperture (f)	2.80 - 22.00	2.00 - 22.00
Diaphragm Blades	9	9
Diaphragm Blades Type	-	circular
Lens Construction	15 elements in 12 groups, including 1 SD element	18 elements in 12 groups, including 3 Aspherical, 2 Extra-low Dispersion and 2 Xtreme High Refractive elements
Zoom System	Rotary	Rotary
Diameter (mm)	84	81