Canon Patent: 200-500mm f/4 and 300-800mm f/8 Lenses

A new Canon patent was spotted. The patent refers to two super zoom lenses. Again, as it seems, for the RF mount

Canon patent application 2022/0035144 (USA) discusses optical formulas for a 200-500mm f/4 lens and a 300-800mm f/8 lens. Other lenses discussed in the patent literature are 200-400mm f/4 and 150mm f/5 – 600mm f/6.5. These too might be for the RF mount.

Example 1

• Focal length: 206.00-485.01
• F value: 4.09-4.10
• Half angle of view: 6.00-2.55
• Image height: 21.64
• Overall length: 486.99
• Back focus: 53.96

Example 3

• Focal length: 154.55-585.00
• F value: 5.10-6.51
• Half angle of view: 7.97-2.12
• Image height: 21.64
• Overall length: 288.00-388.00
• Back focus: 15.00-95.75

Example 4

• Focal length: 205.00-390.00
• F value: 4.10
• Half angle of view: 6.02-3.18
• Image height: 21.64
• Overall length: 367.09
• Back focus: 46.68

Example 5

• Focal length: 305.00-774.99
• F value: 8.09-8.10
• Half angle of view: 4.06-1.60
• Image height: 21.64
• Overall length: 489.78
• Back focus: 100.04

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]