Canon Patent: RF 24-120mm f/2.8 IS & RF 85mm f/1.4 IS

A new Canon patent application for a RF 24-120mm f/2.8 IS and RF 85mm f/1.4 IS lenses.

Canon patent application 2022175604 (Japan, published 11/25/2022) discusses optical formulas for two RF mount lenses, RF 24-120mm f/2.8 IS and RF 85mm f/1.4 IS. From the patent literature:

An object of the present invention is to reduce the size and weight of a movable group decentered with respect to an optical axis, while suppressing the occurrence of chromatic aberration due to the movable group.

Example 1

• Focal Length: 24.72-116.36
• F-value: 2.91
• Half angle of view: 37.12-10.53
• Image height: 21.64
• Total length: 178.45-204.02
• Back focus: 14.59

Example 2

• Focal length: 82.47
• F-value: 1.45
• Half angle of view: 14.70
• Image height: 21.64
• Overall length: 126.52
• Back focus: 13.50

Example 3

• Focal length: 103.16-387.89
• F-value: 4.64-7.30
• Half angle of view: 11.84-3.19
• Image height: 21.64
• Total length: 176.10-288.59
• Back focus: 15.98-63.01

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

• RF 16-28mm lens with either f/2.8, f/2.8-4, or f/4
• 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]