Sigma new 8mm F1.8 Fisheye lens patent surfaced over web for M4/3 system cameras. Take a look at the details below
Self-interpretation translated via gogle
Patent Publication No. 2016-184136
Published 2016.10.20
Filing date 2015.3.27
Example 7
INF 120mm
Focal length 7.90 7.60
F-number 1.82 1.83
Full angle of view 2ω 197.08 197.08
The image height Y 11.60 11.71
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