The Sigma 19mm 2.8 EX DN is a wide to normal lens for Micro Four Thirds as well as E-mount (Sony NEX) cameras. On M4/3 cameras is produces a 38mm equivalent angle of view in 35mm terms. The lens has three aspherical glass lenses for correction of color aberrations and field curvature. Internal focusing for consistent performance throughout all focal distances. Multi-layer coatings reduce flare and minimize ghosting when shooting bright subjects, and help maintain contrast in difficult situations. A unique linear auto focus motor directly moves lens elements without gears or additional mechanical couplings.

Focal length: 19mm
35mm equivalent focal length: 38mm
Angle of view: 59.3 degrees
Lens construction: 8 elements in 6 groups
Aperture blades: 7 rounded
Mininum aperture: F 22
Minimum focusing distance: 7.9 inches (20cm)
Maximum magnification ratio: 1:7.4
Filter Size (mm) 46 mm
Diameter: 2.4 inces (60.6mm)
Length: 1.8 inches (45.7mm)
Weight 4.9 oz (140g)