Canon filed a new lens patent for 60-800mm F4-5.6 cinema lens, the lens is expected to be announced just before 2020 Olympics.
Take a look Patent details below (translated)
Patent Publication No. 2016-173529
Published 2016.9.29
Filing date 2015.3.18
Example
Zoom ratio 13.33
Focal length 60.00 300.00 800.00
F-number 4.00 4.00 5.60
Half angle of view (degrees) 14.53 2.97 1.11
The total lens length 465.36 465.36 465.36
BF 55.10 55.10 55.10
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