Comparison of Samsung 16-50mm f/3.5-5.6 Power Zoom ED OIS NX and Samsung 20-50mm f/3.5-5.6 ED II NX

Attribute	Samsung 16-50mm f/3.5-5.6 Power Zoom ED OIS NX ×	Samsung 20-50mm f/3.5-5.6 ED II NX ×
Filter Size (mm)	43	5
Notes	Samsung NX Mount; Optical Image Stabilization; Power Zoom; i-Function. Available in black or white.	Lens hood optional; i-Scene Mode: Supported (Beauty Shot, Portrait, Children, Backlight, Landscape, Sunset, Dawn, Beach&Snow, Night)
Closest Focus (m)	0.24	0.28
Magnification Ratio (x)	0.24	0.22
Diameter (mm)	64.8	64
Type	Standard Zoom	Standard Zoom
APS Equivalent	24.6 - 77mm	30.8 - 77mm
Diagonal Angle of View (degree)	31.40 - 82.60	31.40 - 70.20
Image Circle	Samsung NX (APS-C)	Samsung NX (APS-C)
Focal Length (mm)	16.00 - 50.00	20.00 - 50.00
Brand	Samsung	Samsung
Name	Samsung 16-50mm f/3.5-5.6 Power Zoom ED OIS NX	Samsung 20-50mm f/3.5-5.6 ED II NX
Weight (g)	111	119
Aperture (f)	3.50 - 22.00	3.50 - 22.00
Diaphragm Blades	7	7
Diaphragm Blades Type	circular	circular
Lens Construction	9 elements in 8 groups, including 1 ED and 4 aspherical elements	9 elements in 8 groups, including 1 aspherical and 1 extra low dispersion element
Zoom System	Rotary	Rotary
Length (mm)	31	39.8
Front Element Rotation	-	-
Focus Details	UPSM (Ultra-Precise Stepping Motor), silent autofocusing	Autofocus