Articles
Sigma Files Patent for 20mm f/1.8 DG HSM Contemporary Lens
The-Digital-Picture_com
According to the Egami Blog, Sigma has filed a patent for a 20mm f/1.8 optical design earmarked for their Contemporary lineup.
If / when this lens is released, it will likely be the first prime lens in Sigma's Contemporary series of lenses.
Description of Patent
Patent Publication No. 2016-12034
If / when this lens is released, it will likely be the first prime lens in Sigma's Contemporary series of lenses.
Description of Patent
Patent Publication No. 2016-12034
- Published 2016.1.21
- Filing date 2014.6.30
- Focal length 20.70 21.01
- F-number 1.84 1.95
- Full angle of view 2? 93.42 90.34
- The image height Y 21.63 21.63
- Overall length of the lens 139.73 139.73