A patent showing the optical formula for a Sigma 70-200mm f/2.8 OS Sport lens has appeared.
Patent Publication No. 2016-75828
- Published 2016.5.12
- Filing date 2014.10.8
- Zoom ratio 2.67
- Focal length 72.41 118.50 193.38
- F-number 2.92 2.92 2.92
- Full angle of view 2ω 33.58 20.51 12.56
- The image height Y 21.63 21.63 21.63
- The total lens length 250.00 250.00 250.00
This lens along with a new 24-70mm f/2.8 OS Art have been long expected from Sigma.
Some of our articles may include affiliate links. If you purchase through these links, we may earn an affiliate commission at no extra cost to you.