Sigma Files Patent for 20mm f/1.8 DG HSM Contemporary Lens

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

• 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