Sigma Patents 200mm f/2 DG OS HSM | Sports and f/1.4 Teleconverter

According to the Egami Blog, Sigma has patented a 200mm f/2 DG OS HSM Sports lens and what seems to be a new, specifically designed 1.4x teleconverter.

Patent Details:

Patent Publication No. 2016-45314

• Published 2016.4.4
• Filing date 2014.8.21

The master lens

• Focal length 194.93
• F-number 2.05
• Full angle of view 2? 12.70
• The image height Y 21.63
• Overall length of the lens 231.33
• BF 60.2233

Complex lens

• Focal length 274.52
• F-number 2.89
• Full angle of view 2? 9.06
• The image height Y 21.63
• Overall length of the lens 252.18
• BF 39.5088