And here is a new Canon patent application for lenses for the RF mount: 22mm, 24mm, 33mm, 35mm, and all are f/1.4.

Canon patent application 2021-113905A (spotted by High Lows Note) discusses optical formulas for the following RF-mount lenses:

• RF 22mm f/1.4
• RF 24mm f/1.4
• RF 33mm f/1.4
• RF 35mm f/1.4

Here they are:

Embodiment 1

• FOCAL LENGTH (MM): 35.00
• F NUMBER: 1.42
• HALF ANGLE OF VIEW (DEGREE): 31.73
• IMAGE HEIGHT (MM): 21.64
• LENS LENGTH (MM): 126.05
• BACK FOCUS (MM): 11.06

Embodiment 2:

• FOCAL LENGTH (MM): 35.00
• F NUMBER: 1.42
• HALF ANGLE OF VIEW (DEGREE): 31.72
• IMAGE HEIGHT (MM): 21.64
• LENS LENGTH (MM): 128.31
• BACK FOCUS (MM): 11.06

Embodiment 3

• FOCAL LENGTH (MM): 34.99
• F NUMBER: 1.43
• HALF ANGLE OF VIEW (DEGREE): 31.73
• IMAGE HEIGHT (MM): 21.64
• LENS LENGTH (MM): 123.63
• BACK FOCUS (MM): 11.06

Embodiment 4:

• FOCAL LENGTH (MM): 24.17
• F NUMBER: 1.42
• HALF ANGLE OF VIEW (DEGREE): 41.83
• IMAGE HEIGHT (MM): 21.64
• LENS LENGTH (MM): 124.64
• BACK FOCUS (MM): 11.06

Embodiment 5:

• FOCAL LENGTH (MM): 33.11
• F NUMBER: 1.42
• HALF ANGLE OF VIEW (DEGREE): 33.17
• IMAGE HEIGHT (MM): 21.64
• LENS LENGTH (MM): 126.01
• BACK FOCUS (MM): 11.06

Embodiment 6:

• FOCAL LENGTH (MM): 33.03
• F NUMBER: 1.42
• HALF ANGLE OF VIEW (DEGREE): 33.23
• IMAGE HEIGHT (MM): 21.64
• LENS LENGTH (MM): 125.39
• BACK FOCUS (MM): 11.06

Embodiment 7:

• FOCAL LENGTH (MM): 34.99
• F NUMBER: 1.43
• HALF ANGLE OF VIEW (DEGREE): 31.73
• IMAGE HEIGHT (MM): 21.64
• LENS LENGTH (MM): 122.18
• BACK FOCUS (MM): 11.06

Embodiment 8:

• FOCAL LENGTH (MM): 22.00
• F NUMBER: 1.42
• HALF ANGLE OF VIEW (DEGREE): 44.52
• IMAGE HEIGHT (MM): 21.64
• LENS LENGTH (MM): 125.60
• BACK FOCUS (MM): 11.06

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

• A bunch of prime lenses for the RF mount
• An improved Electronic Viewfinder
• Patent application for RF 50mm F1.4 and an RF 35mm f/1.4 lenses
• A zoom lens that might be for an EOS R with APS-C sensor
• A smaller IBIS unit.
• A cooling adapter for the RF mount (R5 overheating?)
• A bunch of macro lenses for the RF mount.
• A 8mm f/4 circular fisheye lens for the Canon EOS R system
• A battery grip that works with differently siszed cameras
• A 100-400mm f/5.5-7.1 lens for APS-C cameras. EOS M or DSLR?
• RF 17-70mm lens for EOS R system
• IBIS coming to the EOS M and PowerShot lineup?
• Patent Application: mirrorless camera with large display and virtual control wheel
• Patent Application: IBIS and Lens IS Working Together
• Patent application for high speed mirror movement and control
• Patent application for an RF 14-28mm f/2 lens
• Patent application for an RF 50mm f/1.8 lens
• Patent application for a smart lens cap
• Patent application for celestial auto-focus
• Patent application describing a Pop-Up Flash With LED
• Patent application describing the optical formula for a RF 70-300mm F/4-5.6 IS lens for EOS R systems
• Patent application describing how to improve burst rate by compressing raw files
• Patent application describing a new way to review photos from a sequential shot
• Patent application that describes technology to improve wireless communication while reducing power consumption
• Patent application to spot and reduce moire artefacts in image data
• Patent application for weather sealed lens adapter
• Patent application for AI powered predictive camera control system
• Patent application for 18-55mm kit lens with LCD display
• Patent application to reduce noise in image files