Comparison of Zeiss 100mm f/1.4 Otus 1.4/100 and Sigma 105mm f/1.4 DG HSM Art

Attribute	Sigma 105mm f/1.4 DG HSM Art ×	Zeiss 100mm f/1.4 Otus 1.4/100 ×
Filter Size (mm)	105	86
Notes	Available AF Mounts: Canon EF, Nikon F, L-Mount, Sigma SA, Sony E; Dust- and splash-proof construction	Available Mounts: Canon EF (ZE), Nikon F (ZF.2); Included Accessories: Lens hood, front and rear lens caps.
Closest Focus (m)	1	1
Magnification Ratio (x)	0.12	0.12
Type	Telephoto Prime	Telephoto Prime
Length (mm)	131.5	129
APS Equivalent	1.5x: 157.5mm; 1.6x: 168mm	1.5x: 150mm; 1.6x: 160mm
Diagonal Angle of View (degree)	23.30	24.00
Image Circle	35mm	35mm
Focal Length (mm)	105.00	100.00
Brand	Sigma	Carl-zeiss
Name	Sigma 105mm f/1.4 DG HSM Art	Zeiss 100mm f/1.4 Otus 1.4/100
Weight (g)	1645	1405
Aperture (f)	1.40 - 16.00	1.40 - 16.00
Diaphragm Blades	9	9
Diaphragm Blades Type	rounded	rounded
Lens Construction	17 elements in 12 groups, including 3 FLD glass elements, 2 SLD glass elements, and 1 aspherical lens element	14 elements in 11 groups, including aspherical elements and 9 elements made of special glass with anomalous partial dispersion
Diameter (mm)	115.9	101
Focus Details	Internal with HSM (Hypersonic Motor); full-time manual override	Internal focusing; Manual focus only