Comparison of Zeiss 135mm f/2 Milvus 2/135 and Sigma 150mm ƒ/2.8 EX DG OS HSM APO Macro

Attribute	Zeiss 135mm f/2 Milvus 2/135 ×	Sigma 150mm ƒ/2.8 EX DG OS HSM APO Macro ×
Filter Size (mm)	77	72
Notes	Available lens mounts: Canon EF (ZE), Nikon F (ZF.2); Weather-sealed construction to protect against dust and moisture; Hood and lens caps included.	Image Stabilized (up to 4 stops). Available AF Mounts: Sigma, Canon, Nikon, Pentax, Sony/Minolta. Included Accessories: Case, Bayonet type Hood (LH78
Closest Focus (m)	0.8	0.38
Magnification Ratio (x)	0.25	1
Type	Telephoto Prime	Telephoto Prime (Macro)
Length (mm)	114	150
APS Equivalent	1.5x: 202.5mm; 1.6x: 216mm	1.5x: 225mm; 1.6x: 240mm
Diagonal Angle of View (degree)	18.70	16.40
Image Circle	35mm	35mm
Focal Length (mm)	135.00	150.00
Brand	Carl-zeiss	Sigma
Name	Zeiss 135mm f/2 Milvus 2/135	Sigma 150mm ƒ/2.8 EX DG OS HSM APO Macro
Weight (g)	1059	1180
Aperture (f)	2.00 - 22.00	2.80 - 22.00
Diaphragm Blades	9	9
Diaphragm Blades Type	rounded	rounded
Lens Construction	11 elements in 8 groups, including 4 Anomalous Partial Dispersion elements; Enhanced Zeiss T* anti-reflective coating	19 elements in 13 groups, including 3 SLD elements
Diameter (mm)	89.7	79.6
Focus Details	Manual focus only	Internal; HSM with full-time manual focus override