Comparison of Sigma 30mm f/1.4 EX DC HSM and Sony 50mm f/1.4 ZA SSM Carl Zeiss Planar T*

Attribute	Sony 50mm f/1.4 ZA SSM Carl Zeiss Planar T* ×	Sigma 30mm f/1.4 EX DC HSM ×
Filter Size (mm)	72	62
Notes	For Sony A-mount. Included Accessories: Front and rear lens caps, ALC-SH126 lens hood.	Available AF mounts: [HSM version]: Sigma, Canon, Nikon, Four-Thirds; [w/o HSM]: Pentax, Sony
Closest Focus (m)	0.45	0.4
Magnification Ratio (x)	0.14	0.1
Type	Standard Prime	Standard Prime
Focus Details	Rear-focus, with SSM (Super Sonic wave Motor); Direct Manual Focus; Focus Hold Button	Internal focusing system with HSM
APS Equivalent	75mm	1.5x: 45mm; 1.6x: 48mm
Diameter (mm)	81	75.5
Image Circle	35mm	Image Circle
Focal Length (mm)	50.00	30.00
Brand	Sony	Sigma
Name	Sony 50mm f/1.4 ZA SSM Carl Zeiss Planar T*	Sigma 30mm f/1.4 EX DC HSM
Weight (g)	518	430
Aperture (f)	1.40 - 22.00	1.40 - 16.00
Diaphragm Blades	9	8
Diagonal Angle of View (degree)	47.00	45.00
Length (mm)	71.5	59
Diaphragm Blades Type	circular	-
Lens Construction	8 elements in 5 groups, with 2 aspherical elements	7 elements in 7 groups, including a hybrid aspherical lens and two Special Low Dispersion elements