Canon Patent For RF 24-80mm f/4 Lens For EOS R System

Canon Patent

Canon patent application 2019-191607, spotted by Canon News, discusses optical formulas for a Canon RF 24-80mm f/4 lens for the Canon EOS R system.

  • Focal length 24.72 48.09 82.45
  • F number 4.12 4.12 4.12
  • Half angle of view ( 41.19 24.22 14.70
  • Image height 21.64 21.64 21.64
  • Total lens length 119.50 134.52 149.55
  • BF 13.50 18.71 22.73

The Canon patent also discusses the optical formula for an RF 24-130mm f/4 lens.

  • Focal length 24.72 63.46 131.00
  • F-number 4.12 4.12 4.12
  • Half angle of view (degree) 41.19 18.83 9.38
  • Image height 21.64 21.64 21.64
  • Total lens length 137.50 168.92 200.33
  • BF 13.50 24.03 28.27

More Canon patent applications are listed here. Some particularly interesting patent applications we think might get into production are these:

Canon Patent Application Roundup (dual sensor cam, shrinking MILCs, RF 50mm f/1.8, RF 14-28mm f/2)

Canon Patent

Some new Canon patent applications, all spotted by Canon News.

Canon Patent Application 2019-184921 discusses how to further shrink the size of a mirrorless camera:

An object of the present invention is to provide a technique for suppressing an increase in the size of an image pickup apparatus due to the arrangement of a motor for driving a shutter.


Canon Patent Application 2019-186594 deals with the idea of a camera with dual sensors. Might produce some pretty cool HDR photography:

The half mirror 103 splits the imaging light beam (subject light beam) that has passed through the imaging optical system 102 into a first light beam and a second light beam. The first image sensor 104 and the second image sensor 105 receive the first light beam and the second light beam, respectively. The first image sensor 104 and the second image sensor 105 are constituted by a CCD image sensor, a CMOS image sensor, or the like. The first image sensor 104 and the second image sensor 105 have an image pickup pixel and a focus detection pixel for autofocus using a phase difference detection method. The MPU 106 includes a CPU and a memory that stores a program executed by the CPU, and functions as a control unit that controls the overall operation of the camera body 101. Further, the MPU 106 controls the driving of the photographing lens 102b via the lens driving motor 108.


Can the Canon EOS R system miss a Nifty Fifty lens? It looks like this has not to happen. Canon patent application 2019-184748 discusses optical formulas for an RF 50mm f/1.8 lens. Here comes the Nifty Fifty:

  • F-number 1.85
  • half angle (in degrees) 23.95
  • image height 21.64
  • total lens length 58.55
  • BF 20.94
  • Focal length 48.70
  • F-number 1.85
  • field angle 23.95
  • Image height 21.64
  • total lens length 58.55
  • BF 20.15
  • Focal length 48.70
  • F-number 1.85
  • half angle (in degrees) 23.95
  • Image height 21.64
  • total lens length 58.55
  • BF 16.48
  • Focal length 48.70
  • F-number 1.85
  • half angle (in degrees) 23.95
  • Image height 21.64
  • total lens length 58.55
  • BF 19.38

Canon patent application 2019-0324229 discusses optical formulas for an RF 14-28mm f/2 lens for the EOS R system

  • Focal length 14.42 19.78 27.16
  • F-number 2.06 2.06 2.06
  • Half angle of view 56.32 47.56 38.54
  • Image height 21.64 21.64 21.64
  • Total lens length 164.32 150.29 146.47 
  • BF 16.13 16.13 16.13

More Canon patent applications are listed here. Some particularly interesting patent applications we think might get into production are these:

Canon Might Have A Video Camera With RF Mount On Their Agenda, Patent

RF Mount

Is Canon working on a video camera with RF mount? A patent suggest they might.

Canon patent application 2019‑161567 (Japan) describes a compact video camera that looks like the Canon XC10, and we think it has the RF mount, introduced by Canon with EOS R full frame mirrorless camera system.

Don’t get too excited, however. Most patent applications never go into production. Never the less, it might be a hint that Canon is investing in the RF mount. In any case, an interesting Canon patent application. Please note that the patent application doesn’t explicitly mention the RF mount. We think it might be an RF mount because according to the patent pictures, the lens mount is too close to the sensor to be an EF mount.

More Canon patent applications are listed here. Some particularly interesting patent applications we think might get into production are these:

Here Is Another Canon Patent For IBIS (In Body Image Stabilisation)

Canon Patent

There might be no more doubt that Canon is actively working on IBIS (In Body Image Stabilisation). Here is another Canon patent application.

Canon patent application 2019-152785 describes an IBIS unit and its working. An excerpt from the paten literature:

Problems of the stage device as the blur correction mechanism of such an image pickup device include high efficiency in driving force generation and linearity improvement of a magnetic circuit for position detection. In response to this problem, Patent Document 2 discloses a configuration in which three magnets are arranged for each driving force generation unit to form a magnetic circuit using the concept of the Halbach array (hereinafter referred to as “Halbach magnetic circuit”).

it is possible to achieve high efficiency in generating driving force and to improve the linearity of the magnetic circuit for position detection

Some rumor outlets are presenting this patent application as the patent describing “the IBIS” Canon is going to feature on future cameras. We’d be a bit more cautious with such claims. There is nothing to proof it is “the IBIS”. More likely, it’s just one more IBIS patent in a long row.

We have no doubt IBIS is indeed coming to future Canon cameras. We would just be a bit more prudent and avoid saying it will be on board on Canon’s next EOS R model (which most likely it will not). Not on the next one, but maybe on the camera coming after.

More Canon patent applications are listed here. Some particularly interesting patent applications we think might get into production are these:

Source: Canon News

Canon Patent For Various Small/Pancake Prime Lenses For EOS R

Prime Lenses

Just small or pancake prime lenses? We are not sure. We are just sure they are small and for the Canon EOS R full frame mirrorless system.

Canon patent application 2019-152683 discusses optical formulas for the following (small) prime lenses:

  • Canon RF 20mm F/2.0
  • Canon RF 35mm F/2.8
  • Canon RF 45mm F/2.8
  • Canon RF 35mm F/2.0

and a 16-35mm f/4 lens, also discussed in the patent application. The lenses appear to be non-L lenses, i.e. less expensive lenses. Are these pancake lenses, in you opinion?


More Canon patent applications are listed here. Some particularly interesting patent applications we think might get into production are these:

Source: Canon News

Canon Patent Application Seems To Confirm Our Rumor About High Resolution EOS R Model

Canon Patent Application

Back in August we were tipped about what might be the sensor resolution of the upcoming high resolution Canon EOS R body.

Now a Canon patent application (2019-149607, Japan) surfaced. The patent application discusses an image sensor having a resolution of 83MP. To be more precise, the Canon patent discusses how you can improve focus accuracy based upon different subject colors. Two sensors ate discussed, one having a resolution of 20.75MP, the other of 83.06MP.

We think this Canon patent application could refer to the sensor of the yet not announced high resolution EOS R model (all rumors).

There is another aspect that captured our attention. The other discussed resolution, 20.75MP, is almost exactly 1/4 of 83.06. So is this patent application referring to the same technology, i.e. Quad Pixel AF, as this previously spotted patent application? We do not think, however, that Canon’s high resolution EOS R will have Quad Pixel AF.

An 83MP resolution is also what you get in a full frame sensor if you upscale the 32.5MP of the new APS-C sensor featured on the brand new Canon EOS 90D and EOS M6 Mark II. So, a full frame sensor with 83MP, as we leaked, is definitely a possibility. Add to this that the upcoming high resolution EOS R camera will also (most likely) replace the Canon EOS 5Ds/5Ds R and it appears even more likely.

Might this patent refer to the sensor in Canon’s upcoming high resolution EOS R camera?

Source: Canon News