Comparison of Sigma 30mm ƒ/1.4 DC HSM Art and Tamron 35mm ƒ/1.8 Di VC USD SP (Model F012)

Attribute	Tamron 35mm ƒ/1.8 Di VC USD SP (Model F012) ×	Sigma 30mm ƒ/1.4 DC HSM Art ×
Filter Size (mm)	67	62
Notes	Available mounts: Canon EF, Nikon F, Sony A; VC Optical Image Stabilization (Canon and Nikon only); Included Accessories: Lens hood, lens caps.	Available AF mounts: Sigma, Canon, Nikon. Included Accessories: case, petal type lens hood (LH686-01).
Closest Focus (m)	0.2	0.3
Magnification Ratio (x)	0.4	0.15
Type	Wide Prime	Standard Prime
Length (mm)	80.8	63.3
APS Equivalent	1.5x: 52.5mm; 1.6x: 56mm	1.5x: 45mm; 1.6x: 48mm
Diagonal Angle of View (degree)	63.40	50.70
Image Circle	Image Circle	Image Circle
Focal Length (mm)	35.00	30.00
Brand	Tamron	Sigma
Name	Tamron 35mm ƒ/1.8 Di VC USD SP (Model F012)	Sigma 30mm ƒ/1.4 DC HSM Art
Weight (g)	480	435
Aperture (f)	1.80 - 16.00	1.40 - 16.00
Diaphragm Blades	9	9
Diaphragm Blades Type	circular	rounded
Lens Construction	10 elements in 9 groups, including 1 LD (Low Dispersion), 1 XLD (eXtra Low Dispersion) and 2 aspherical elements	9 elements in 8 groups, including 1 aspherical element, Super Multi-Layer Coating
Diameter (mm)	80.4	74.2
Focus Details	Internal; USD (Ultrasonic Silent Drive) with continuous manual focus mechanism	Rear focusing system with HSM (Hyper Sonic Motor)