Comparison of Samsung 50-150mm f/2.8 S OIS and Tamron SP AF 180mm f/3.5 Di LD IF Macro 1:1

Attribute	Tamron SP AF 180mm f/3.5 Di LD IF Macro 1:1 ×	Samsung 50-150mm f/2.8 S OIS ×
Aperture (f)	3.50 - 32.00	2.80 - 22.00
Diagonal Angle of View (degree)	14.00	10.70 - 31.40
Filter Size (mm)	72	72
Notes	Available mounts: Canon, Minolta, Nikon	Samsung NX mount; Optical Image Stabilization; Splash and dust resistant; Tripod mount collar and hood included.
Type	Telephoto Prime Macro	Telephoto Zoom
Closest Focus (m)	0.47	0.7
APS Equivalent	1.5x: 270mm; 1.6x: 288mm	77 - 231mm
Diaphragm Blades	7	-
Image Circle	Image Circle	APS-C
Focal Length (mm)	180.00	50.00 - 150.00
Brand	Tamron	Samsung
Name	Tamron SP AF 180mm f/3.5 Di LD IF Macro 1:1	Samsung 50-150mm f/2.8 S OIS
Weight (g)	921	915
Zoom System	-	Rotary
Lens Construction	14 elements in 11 groups, including 2 LD elements	20 elements in 13 groups, including 1 XHR (eXtreme High Refractive) and 3 ED elements; SHS (Samsung Hyper Shield Coating)
Diameter (mm)	84	81
Length (mm)	165	154
Magnification Ratio (x)	1	-
Focus Details	Internal	UPSM stepping motor with custom focus range limiter