Comparison of Sigma APO Macro 150mm f/2.8 EX DG HSM and Sony SAL-135F28 135mm f/2.8 (T4.5) STF

Attribute	Sigma APO Macro 150mm f/2.8 EX DG HSM ×	Sony SAL-135F28 135mm f/2.8 (T4.5) STF ×
Notes	Available AF Mounts: Sigma, Canon, Nikon, Four-Thirds	Included Accessories: SH0014 Lens Hood
Magnification Ratio (x)	1	0.25
Filter Size (mm)	72	72
Focus Details	Internal; HSM with full-time manual focus override	-
Closest Focus (m)	0.38	0.87
Lens Construction	16 elements in 12 groups, including 2 SLD elements	8 elements in 6 groups
Length (mm)	137	99
Focal Length (mm)	150.00	135.00
APS Equivalent	1.5x: 225mm; 1.6x: 240mm	202.5mm
Brand	Sigma	Sony
Image Circle	35mm	35mm
Name	Sigma APO Macro 150mm f/2.8 EX DG HSM	Sony SAL-135F28 135mm f/2.8 (T4.5) STF
Weight (g)	895	730
Type	Telephoto Prime Macro	Telephoto Prime (Smooth Transition Focus)
Aperture (f)	2.80 - 22.00	2.80 - 32.00
Diaphragm Blades	9	9
Diagonal Angle of View (degree)	16.40	18.00
Diameter (mm)	79.6	80