Canon Patents

Patent: RF cinema zoom lenses

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Canon News has uncovered a patent that appears to show RF mount cinema zoom lenses. It looks like these are cinema lenses because of their complexity and larger image height of 14mm. APS-C lenses from Canon tend to have an image height of 13.66mm.

Japan Patent Application 2020-194056

Canon RF Cinema 18-55 F2.0
Focal Length 18.51mm 34.71mm 55.00mm
F Number 2.06 2.06 2.06
Half Angle of View 37.10° 21.97° 14.28°
Image Height 14.00mm 14.00mm 14.00mm
Total Lens Length 250.01mm 250.01mm 250.01mm
Backfocus 12.95mm 12.95mm 12.95mm
Canon RF Cinema 16-70mm F2.8
Focal Length 16.51mm 36.08mm 68.00mm
F Number 2.80 2.80 2.80
Half Angle of View 40.30° 21.21° 11.63°
Image Height 14.00mm 14.00mm 14.00mm
Backfocus 24.40mm 24.40mm 24.40mm
Canon RF Cinema 19-50mm F2.0
Focal Length 19.01mm 33.19mm 50.00mm
F Number 2.05 2.06 2.06
Half Angle of View 36.38° 22.87° 15.64°
Image Height 14.00mm 14.00mm 14.00mm
Total Lens Length 225.07mm 225.07mm 225.07mm
Backfocus 13.38mm 13.38mm 13.38mm
Canon RF Cinema 18-55mm F2.0
Focal Length 18.51mm 34.86mm 55.00mm
F Number 2.06 2.06 2.06
Half Angle of View 37.10° 21.88° 14.28°
Image Height 14.00mm 14.00mm 14.00mm
Total Lens Length 235.03mm 235.03mm 235.03mm
Backfocus 12.94mm 12.94mm 12.94mm

BroderLund

5D Mark III
Feb 9, 2015
56
67
This would be amazing glass! Just what I have been hoping for the new RF C line. Now I wonder what the size and cost will be. Nether will be small. Also, will these be fully manual lenses, or autofocus like the COMPACT-SERVO 18-80mm T4.4. Given the wide aperture I feel these will be fully manual, and therefore not cheap.
 

marathonman

EOS 90D
CR Pro
Aug 29, 2016
145
703
Typical Canon. Cripple Hammer their RF lenses to protect their EF line. Writing to the Executives at Canon Japan demanding a total and unreserved apology, and alerting the UK small claims court to my impending class action!
 

Bob Howland

EOS RP
CR Pro
Mar 25, 2012
604
196
Does the Canon R mount support power zoom lenses? One of the benefits of purchasing a camcorder instead of an interchangeable lens video camera is that the camcorder's integral lens can be zoomed, including from a remote control.
 

mariosk1gr

EOS M6 Mark II
Jan 4, 2019
78
55
After long time ago we were expecting the successor of EF-S 17-55 F:/2.8 iS.... if the RF 16-70 f:/2.8 will come as a cinema grade lens with AF and iS then this lens will be the one to rule them all (while ofc we r talking in regards of video and all around lens)!! Also Rf 18-55 f:/2.0 is an amazing patent! Canon bring these lenses please and let us to put them on our c70s and let the other ppl talk about a7/fx shit while we will create amazing images!!
 

waldi72

I'm New Here
Dec 18, 2014
13
7
Does the Canon R mount support power zoom lenses? One of the benefits of purchasing a camcorder instead of an interchangeable lens video camera is that the camcorder's integral lens can be zoomed, including from a remote control.
You can buy SERVO Cinema Zoom lenses for any Canon C series Cinema Camera.
https://www.bhphotovideo.com/c/prod..._name:canon,fct_zooms-primes_4696:zoom-lenses
What is more you can use them even on EOS 1D X series Camera and by providing external 12V supply you can use power zoom too.
 

thomas2279@hotmail.com

EOS M6 Mark II
Feb 7, 2013
93
28
Superb edition Canon - forging the RF system to be excellent FF still, video and cinema system. (Wished Nikon would have done a cine line cameras + lenses - likely to be too late - even if they started it now )
 

Skux

EOS M6 Mark II
Feb 21, 2020
76
102
Please let any of these be real. This is the first step in making RF APS-C worthwhile.
 

RunAndGun

EOS RP
CR Pro
Dec 16, 2011
431
115
Does the Canon R mount support power zoom lenses? One of the benefits of purchasing a camcorder instead of an interchangeable lens video camera is that the camcorder's integral lens can be zoomed, including from a remote control.
You can buy SERVO Cinema Zoom lenses for any Canon C series Cinema Camera.
https://www.bhphotovideo.com/c/products/digital-cine-lenses/ci/25249?sort=PRICE_LOW_TO_HIGH&filters=fct_a_features_4698:servo-zoom-grip,fct_brand_name:canon,fct_zooms-primes_4696:zoom-lenses
What is more you can use them even on EOS 1D X series Camera and by providing external 12V supply you can use power zoom too.


Just for fun, I did this one day... ;)
17-120:5D.jpg