Comparison of Sigma 19mm F2.8 EX DN and Sony SAL-28F28 28mm f/2.8

Attribute	Sony SAL-28F28 28mm f/2.8 ×	Sigma 19mm F2.8 EX DN ×
Magnification Ratio (x)	0.13	0.14
Filter Size (mm)	49	46
Focus Details	-	Inner focusing with linear AF motor
Closest Focus (m)	0.3	0.2
Lens Construction	5 elements in 5 groups	8 elements in 6 groups, including 3 aspherical elements
Length (mm)	43	45.7
Focal Length (mm)	28.00	19.00
Diaphragm Blades Type	-	rounded
Brand	Sony	Sigma
Image Circle	35mm	APS-C
Name	Sony SAL-28F28 28mm f/2.8	Sigma 19mm F2.8 EX DN
Weight (g)	184	140
Type	Wide Prime	Wide Prime
Notes	Built-in Hood	Lens mounts: Sony E-Mount, Micro Four Thirds. Sigma's Super Multi-Layer Coating.
APS Equivalent	42mm	1.5x: 28.5mm; 2.0x: 38mm
Aperture (f)	2.80 - 22.00	2.80 - 22.00
Diaphragm Blades	7	7
Diagonal Angle of View (degree)	75.00	59.30
Diameter (mm)	71	60.6