If i'm not wrong, this is the 4th patent of the 300 f/4 since early 2011... So can we conclude the actual one will have a new version in 2012 or 2013 ?
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patent 300mm F/4
Focal length f = 294.0mm
Fno = 4.14
= 8.42deg angle.
15 sheets 11 groups configured
One element radial refractive index profile
Bowen ratio 0.78
Inner Focus (the second lens group for focusing)