Comparison of Sigma 150mm ƒ/2.8 EX DG OS HSM APO Macro and Sony SAL-135F18Z Carl Zeiss Sonnar T* 135mm f/1.8

Attribute	Sigma 150mm ƒ/2.8 EX DG OS HSM APO Macro ×	Sony SAL-135F18Z Carl Zeiss Sonnar T* 135mm f/1.8 ×
Magnification Ratio (x)	1	0.25
Filter Size (mm)	72	77
Focus Details	Internal; HSM with full-time manual focus override	Internal
Closest Focus (m)	0.38	0.72
Lens Construction	19 elements in 13 groups, including 3 SLD elements	11 elements in 9 groups, including 2 ED elements
Length (mm)	150	115
Focal Length (mm)	150.00	135.00
Diaphragm Blades Type	rounded	-
Brand	Sigma	Sony
Image Circle	35mm	35mm
Name	Sigma 150mm ƒ/2.8 EX DG OS HSM APO Macro	Sony SAL-135F18Z Carl Zeiss Sonnar T* 135mm f/1.8
Weight (g)	1180	1050
Type	Telephoto Prime (Macro)	Telephoto Prime
Notes	Image Stabilized (up to 4 stops). Available AF Mounts: Sigma, Canon, Nikon, Pentax, Sony/Minolta. Included Accessories: Case, Bayonet type Hood (LH78	Included Accessories: SH0007 Lens Hood
APS Equivalent	1.5x: 225mm; 1.6x: 240mm	202.5mm
Aperture (f)	2.80 - 22.00	1.80 - 22.00
Diaphragm Blades	9	9
Diagonal Angle of View (degree)	16.40	18.00
Diameter (mm)	79.6	88.5