Comparison of Zeiss 40mm f/2 Batis 2/40 CF Distigon and Sigma 30mm f/1.4 DC DN Contemporary

Attribute	Zeiss 40mm f/2 Batis 2/40 CF Distigon ×	Sigma 30mm f/1.4 DC DN Contemporary ×
Filter Size (mm)	67	52
Notes	Available lens mounts: Sony FE-Mount (Full-frame E-Mount); Dust and weather sealed.	Available AF mounts: Micro Four Thirds, Sony E-Mount. Included Accessories: Lens caps, lens hood. Compatible with Sigma USB Dock.
Closest Focus (m)	0.24	0.3
Magnification Ratio (x)	0.3	0.14
Type	Wide Prime	Standard Prime
Length (mm)	93	73.4
APS Equivalent	1.5x: 60mm	1.5x: 45mm; 1.6x: 48mm
Diagonal Angle of View (degree)	56.00	50.70
Image Circle	35mm	Image Circle
Focal Length (mm)	40.00	30.00
Brand	Carl-zeiss	Sigma
Name	Zeiss 40mm f/2 Batis 2/40 CF Distigon	Sigma 30mm f/1.4 DC DN Contemporary
Weight (g)	361	264
Aperture (f)	2.00 - 22.00	1.40 - 16.00
Diaphragm Blades	9	9
Diaphragm Blades Type	rounded	rounded
Lens Construction	9 elements in 8 groups	9 elements in 7 groups, including 1 aspherical element and 1 double-sided aspherical element
Diameter (mm)	91	66
Focus Details	Autofocus with linear motor; Manual focus supported; Focus Limiter switch; OLED display of focus distance and depth of field	Autofocus via stepper motor designed to support video