Comparison of Samsung 50-150mm f/2.8 S OIS and Tamron 70-200mm f/2.8 Di LD IF Macro SP AF

Attribute	Tamron 70-200mm f/2.8 Di LD IF Macro SP AF ×	Samsung 50-150mm f/2.8 S OIS ×
Aperture (f)	2.80 - 32.00	2.80 - 22.00
Diagonal Angle of View (degree)	12.30 - 34.30	10.70 - 31.40
Filter Size (mm)	77	72
Notes	Available mounts: Canon, Nikon, Pentax, Sony; Included accessories: Petal-shaped lens hood	Samsung NX mount; Optical Image Stabilization; Splash and dust resistant; Tripod mount collar and hood included.
Type	Telephoto Zoom	Telephoto Zoom
Closest Focus (m)	0.95	0.7
APS Equivalent	1.5x: 105 - 300mm; 1.6x: 112 - 320mm	77 - 231mm
Diaphragm Blades	9	-
Image Circle	35mm	APS-C
Focal Length (mm)	70.00 - 200.00	50.00 - 150.00
Brand	Tamron	Samsung
Name	Tamron 70-200mm f/2.8 Di LD IF Macro SP AF	Samsung 50-150mm f/2.8 S OIS
Weight (g)	1100	915
Zoom System	Rotary	Rotary
Lens Construction	18 elements in 13 groups, including 3 LD (low dispersion) elements	20 elements in 13 groups, including 1 XHR (eXtreme High Refractive) and 3 ED elements; SHS (Samsung Hyper Shield Coating)
Diameter (mm)	89.5	81
Length (mm)	194.3	154
Magnification Ratio (x)	0.32	-
Focus Details	Internal Focusing; One-touch AF/MF Switchover mechanism (for Canon and Nikon only)	UPSM stepping motor with custom focus range limiter