Comparison of Carl Zeiss 135mm f/2 Apo Sonnar T* 2/135 and Sigma APO Macro 150mm f/2.8 EX DG HSM

Attribute	Carl Zeiss 135mm f/2 Apo Sonnar T* 2/135 ×	Sigma APO Macro 150mm f/2.8 EX DG HSM ×
Magnification Ratio (x)	0.25	1
Filter Size (mm)	77	72
Focus Details	Manual focus only	Internal; HSM with full-time manual focus override
Closest Focus (m)	0.8	0.38
Lens Construction	11 elements in 8 groups	16 elements in 12 groups, including 2 SLD elements
Length (mm)	130	137
Focal Length (mm)	135.00	150.00
Diaphragm Blades Type	rounded	-
Brand	Carl-zeiss	Sigma
Image Circle	35mm	35mm
Name	Carl Zeiss 135mm f/2 Apo Sonnar T* 2/135	Sigma APO Macro 150mm f/2.8 EX DG HSM
Weight (g)	930	895
Type	Telephoto Prime	Telephoto Prime Macro
Notes	Available SLR mounts: Canon EF-mount (ZE), Nikon F-Mount (ZF.2)	Available AF Mounts: Sigma, Canon, Nikon, Four-Thirds
APS Equivalent	1.5x: 202.5mm1.6x: 216mm	1.5x: 225mm; 1.6x: 240mm
Aperture (f)	2.00 - 22.00	2.80 - 22.00
Diaphragm Blades	9	9
Diagonal Angle of View (degree)	18.70	16.40
Diameter (mm)	84	79.6