Comparison of Samsung 16-50mm ƒ/2-2.8 S ED OIS NX and Tamron SP AF 17-50mm ƒ/2.8 XR Di II VC LD Aspherical IF

Attribute	Samsung 16-50mm ƒ/2-2.8 S ED OIS NX ×	Tamron SP AF 17-50mm ƒ/2.8 XR Di II VC LD Aspherical IF ×
Aperture (f)	2.00 - 22.00	2.80 - 32.00
Filter Size (mm)	72	72
Notes	Samsung NX Mount; Optical Image Stabilization; Lens hood included; i-Function; Splash and dust proof.	Vibration Compensation (VC) Image Stabilization; Available AF mounts: Canon, Nikon; Includes petal type lens hood.
Closest Focus (m)	0.3	0.29
Magnification Ratio (x)	0.19	0.21
Zoom System	Rotary	Rotary
Type	Standard Zoom	Standard Zoom
APS Equivalent	24.6 - 77mm	1.5x: 25.5 - 75mm; 1.6x: 27.2 - 80mm
Diaphragm Blades	9	7
Image Circle	Samsung NX (APS-C)	Image Circle
Focal Length (mm)	16.00 - 50.00	17.00 - 50.00
Brand	Samsung	Tamron
Name	Samsung 16-50mm ƒ/2-2.8 S ED OIS NX	Tamron SP AF 17-50mm ƒ/2.8 XR Di II VC LD Aspherical IF
Weight (g)	622	570
Diaphragm Blades Type	circular	rounded
Lens Construction	18 elements in 12 groups, including 3 Aspherical, 2 Extra-low Dispersion and 2 Xtreme High Refractive elements	19 elements in 14 groups, including Low Dispersion and Aspherical elements
Diagonal Angle of View (degree)	31.40 - 82.60	31.20 - 78.80
Length (mm)	96.5	94.5
Diameter (mm)	81	79.6
Focus Details	UPSM (Ultra-Precise Stepping Motor), silent autofocusing	Internal, with built-in focus motor