Canon Patent Application: More Canon RF super telephoto primes

Hot on the heels of our discovery last week of the Canon RF Super Telephoto prime patent application is more of them.  We have two patent applications for you.

As with last week's patent application, this one as well focuses on the 400,500 and 600mm super telephotos and leaves off the notable 300mm 2.8.

The Backfocus (BF) identifies that it's shorter than the EF mount of 44mm, meaning the only Canon cameras these could be for, is the RF mount.

Of course, the flurry of patent applications doesn't mean that Canon is close to releasing any of the super telephotos.  It simply means they are working on them.

Focal Length 588.00
F-number 4.12
Field Angle 2.11
Image Height 21.64
Entire Lens Length 470.01 
BF 30.00 

Focal Length 489.95
F-number 4.12
Field Angle 2.53
Image Height 21.64
Entire Lens Length 382.69 
BF 32.61 

Focal Length 390.00
F-number 2.90
Field Angle 3.18
Image Height 21.64
Entire Lens Length 360.00 
BF 30.61

US Patent Application 20190162939

In this next patent application, we again see the 400,500 and 600mm super telephotos;

Focal length 392.00
F-number 2.88
Field angle 3.16
Image height 21.64
Overall lens length 380.13 
BF (Sk) 32.79 

Focal length 490.00
F-number 4.00
Field angle 2.53
Image height 21.64
Overall lens length 395.23 
BF (Sk) 38.46 

F-number 4.00
Field angle 2.11
Image height 21.64
Overall lens length 480.33 
BF (Sk) 41.71 

US Patent Application 20190162932

Richard CanonNewsRichard 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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