Canon Patent Application: Super Telephotos
Canon has applied for a patent that describes a few of their super telephotos. Research never stops on super telephotos regardless of when the last release was done.
There are quite a few embodiments in this patent application;
Focal length 294.00
F-number 2.91
Half angle of view (degrees) 4.21
Image height 21.64
Total lens length 276.40
BF 65.35
Focal length 392.00
F-number 2.90
Half angle of view (degrees) 3.16
Image height 21.64
Total lens length 371.25
BF 69.92
Focal length 490.00
F-number 4.12
Half angle of view (degrees) 2.53
Image height 21.64
Total lens length 410.77
BF 66.03
Focal length 784.00
F-number 5.80
Half angle of view (degrees) 1.58
Image height 21.64
Total lens length 484.53
BF 75.94
US Patent Application 20190041606
US Patent Application 20190041605
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Richard CanonNews
Richard has been using Canon cameras since the 1990s, with his first being the now legendary EOS-3. Since then, Richard has continued to use Canon cameras and now focuses mostly on infrared photography. Richard is the founder and editor of CanonNews since 2017, and has worked as a writer on CanonRumors and other websites in the past.
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