Comparison of Samsung 16-50mm ƒ/2-2.8 S ED OIS NX and Sigma 24-70mm f/2.8 EX DG Macro

Attribute	Sigma 24-70mm f/2.8 EX DG Macro ×	Samsung 16-50mm ƒ/2-2.8 S ED OIS NX ×
Notes	Available AF Mounts: Sigma, Canon, Nikon, Minolta, Pentax	Samsung NX Mount; Optical Image Stabilization; Lens hood included; i-Function; Splash and dust proof.
Magnification Ratio (x)	0.26	0.19
Filter Size (mm)	82	72
Length (mm)	115.5	96.5
Closest Focus (m)	0.4	0.3
Diagonal Angle of View (degree)	34.30 - 84.10	31.40 - 82.60
Focus Details	Internal with Dual Focus mechanism	UPSM (Ultra-Precise Stepping Motor), silent autofocusing
Focal Length (mm)	24.00 - 70.00	16.00 - 50.00
APS Equivalent	1.5x: 36 - 105mm; 1.6x: 38.4 - 112mm	24.6 - 77mm
Brand	Sigma	Samsung
Image Circle	35mm	Samsung NX (APS-C)
Name	Sigma 24-70mm f/2.8 EX DG Macro	Samsung 16-50mm ƒ/2-2.8 S ED OIS NX
Weight (g)	715	622
Type	Standard Zoom	Standard Zoom
Aperture (f)	2.80 - 32.00	2.00 - 22.00
Diaphragm Blades	9	9
Diaphragm Blades Type	-	circular
Lens Construction	14 elements in 13 groups, including 3 aspherical and 2 SLD elements	18 elements in 12 groups, including 3 Aspherical, 2 Extra-low Dispersion and 2 Xtreme High Refractive elements
Zoom System	Rotary	Rotary
Diameter (mm)	88.6	81