It’s not a secret that Canon is actively working on expanding the lens lineup for the EOS R full frame mirrorless system. A new Canon patent application adds to the long list.

Canon patent application 2021-18277A (Japan) discusses optical formulas for a bunch of prime lenses for the RF mount with f/1.8 and f/1.4.

RF 24mm f/1.4:

• Focal length: 24.00 mm
• F number: 1.40
• Half angle of view: 42.03
• Image height: 21.64 mm
• Lens length: 120.00 mm
• Back focus: 15.00 mm

RF 35mm f/1.8:

• Focal length: 35.00 mm
• F number: 1.80
• Half angle of view: 31.72
• Image height: 21.64 mm
• Lens length: 100.00 mm
• Back focus: 15.00 mm

RF 28mm f/1.8:

• Focal length: 28.00 mm
• F number: 1.80
• Half angle of view: 37.69
• Image height: 21.64 mm
• Lens length: 100.00 mm
• Back focus: 15.85 mm

RF 24mm f/1.8:

• Focal length: 24.00 mm
• F number: 1.80
• Half angle of view: 42.03
• Image height: 21.64 mm
• Lens length: 110.00 mm
• Back focus: 15.06 mm

RF 24mm f/1.4:

• Focal length: 24.00 mm
• F number: 1.40
• Half angle of view: 42.03
• Image height: 21.64 mm
• Lens length: 120.00 mm
• Back focus: 15.79 mm

RF 50mm f/1.4:

• Focal length: 50.00 mm
• F number: 1.40
• Half angle of view: 23.40
• Image height: 21.64 mm
• Lens length: 100.00 mm
• Back focus: 15.00 mm

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

• 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

[via Hi Lows Note]