Here is a new Canon patent application. As so often lately, this one too refers to an RF mount lens.

Canon patent application 2021-193435 (Japan) discusses optical formulas for what could be a very interesting zoom lens for EOS R photographers. Indeed, it could be the mother of all zoom lenses. A RF 35-600mm f/4-7.2 zoom lens (example 4, below) is discussed in the patent literature (along with a 24-300mm lens).

Example 1:

• Focus focal length 24.74 76.74 387.90
• F number 3.60 5.30 6.50
• Half angle of view 39.51 15.75 3.19
• Image height 20.40 21.64 21.64
• Lens total length 194.51 241.18 287.86
• BF 13.32 48.47 46.4

Example 2:

• Focal length 24.72 69.39 289.87
• F number 3.60 5.30 5.88
• Half angle of view 39.53 17.32 4.27
• Image height 20.40 21.64 21.64
• Lens total length 168.78 202.25 235.73
• BF 13.34 39.12 36.81

Example 3:

• Focal length 28.81 94.89 484.70
• F number 3.60 5.30 7.20
• Half angle of view 35.30 12.84 2.56
• Image height 20.40 21.64 21.64
• Lens total length 194.00 240.17 286.34
• BF 13.85 43.81 39.37

Example 4:

• Focal length 33.05 140.67 581.87
• F number 4.10 5.90 7.20
• Half angle of view 31.69 8.74 2.13
• Image height 20.40 21.64 21.64
• Lens total length 218.72 276.34 333.97
• BF 14.32 39.28 46.78

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

• Automatic shutter silencing based on subject and distance
• 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

[via asobinet.com]