Sigma 19mm F2.8 EX DN
The Sigma 19mm F2.8 EX DN lens is a wide-angle prime lens for Sony E and Micro Four-Thirds mounts, announced by Sigma in January 2012. Along with the Sigma 30mm F2.8 EX DN, it was part of the first release of Sigma lenses for compact interchangeable lens cameras, and hence the inception of the "DN" line, created by Sigma to cater to these cameras,[1] an offering that in January 2013 was expanded with another lens, the Sigma 60mm f/2.8 DN Art.[2]
 | |
| Maker | Sigma |
|---|---|
| Lens mount(s) | Sony E-mount, Micro Four Thirds |
| Technical data | |
| Type | Prime |
| Focus drive | Stepper motor |
| Focal length | 19mm |
| Focal length (35mm equiv.) | 28.5mm |
| Image format | APS-C |
| Aperture (max/min) | f/2.8 - 22.0 |
| Close focus distance | 0.20 metres (0.66 ft) |
| Max. magnification | 0.135x |
| Diaphragm blades | 7 |
| Construction | 8 elements in 6 groups |
| Features | |
| Manual focus override |  Yes |
| Weather-sealing |  No |
| Lens-based stabilization | No |
| Aperture ring | No |
| Application | Landscape, Street |
| Physical | |
| Max. length | 45.7 millimetres (1.80 in) |
| Diameter | 60.8 millimetres (2.39 in) |
| Weight | 140 grams (0.31 lb) |
| Filter diameter | 46mm |
| Accessories | |
| Lens hood | LH520-03, Barrel-type |
| History | |
| Introduction | 2012 |
| Retail info | |
| MSRP | $199 USD |
Exterior
The lens has a matte black plastic exterior.
Optics
The lens suffers from mild barrel distortion, moderate vignetting, and moderate amounts of chromatic aberration.[3]
In general it is a sharp lens especially in the centre and when stopped down to f8 the edges will catch-up. Flare resistance is quite good. Bokeh is smooth and colour rendition is neutral.[4]
"Art" series version
On January 29, 2013, an aesthetically updated version of this lens was announced, the Sigma 19mm F2.8 DN Art.[5] It has a glossy black (or silver) plastic exterior with the Sigma Art "A" badge on the side of the lens. It features a large manual focus ring and a detachable barrel-type lens hood.
The optics are identical to the older version.[6]
References
- "Sigma launches DN lens line with two F2.8 Primes". 10 January 2012.
- "Sigma announces 60mm F2.8 for mirrorless and redesigned 30mm F1.4 DC".
- "Sigma 19mm F2.8 EX DN: DXOmark Review". DXOmark. 26 November 2013. Retrieved 2017-06-28.
- Alhadeff, Marc (2018-08-27). "Sigma 19mm F2.8 DN Art (APS-C) for Sony E mount test/review on Sony Alpha Blog". Sony Alpha Blog. Retrieved 2019-06-20.
- "Sigma 19mm F2.8 DN Art for Sony E-mount lens review: Digital Photography Review". dpreview. Retrieved 2017-06-28.
- "Sigma 19mm F2.8 EX DN for Sony E-mount lens review: Digital Photography Review". dpreview. Retrieved 2017-06-28.