Comparison of Sigma 135mm ƒ/1.8 DG HSM Art and Sony SAL-135F18Z Carl Zeiss Sonnar T* 135mm f/1.8

Attribute	Sigma 135mm ƒ/1.8 DG HSM Art ×	Sony SAL-135F18Z Carl Zeiss Sonnar T* 135mm f/1.8 ×
Magnification Ratio (x)	0.2	0.25
Filter Size (mm)	82	77
Focus Details	Internal with HSM (Hypersonic Motor) with limiter and full-time manual override	Internal
Closest Focus (m)	0.88	0.72
Lens Construction	13 elements in 10 groups	11 elements in 9 groups, including 2 ED elements
Length (mm)	114.9	115
Focal Length (mm)	135.00	135.00
Diaphragm Blades Type	rounded	-
Brand	Sigma	Sony
Image Circle	35mm	35mm
Name	Sigma 135mm ƒ/1.8 DG HSM Art	Sony SAL-135F18Z Carl Zeiss Sonnar T* 135mm f/1.8
Weight (g)	1130	1050
Type	Telephoto Prime	Telephoto Prime
Notes	Available AF Mounts: Sigma SA, Canon EF, L-Mount, Nikon F, Sony E; Dust- and splash-proof construction; Compatible with Mount Converter MC-11	Included Accessories: SH0007 Lens Hood
APS Equivalent	1.5x: 202.5mm; 1.6x: 216mm	202.5mm
Aperture (f)	1.80 - 16.00	1.80 - 22.00
Diaphragm Blades	9	9
Diagonal Angle of View (degree)	18.20	18.00
Diameter (mm)	91.4	88.5