Canon Patent Application For RF 24-300mm f/4-5.6 Lens

Canon is working on consumer oriented lenses for the EOS R system, and this Canon patent application seems to confirm the commitment. An upcoming RF lens just leaked through a certification authority.

Canon patent application P2019-219679A (Japan) discusses the optical formula for an RF 24-300mm f/4-5.6 lens. We think it is an RF mount lens since the patent literature refers to a full frame mirrorless camera.

• Zoom ratio: 11.77
• Focal length: 24.72 90.83 290.86 mm
• F number: 4.12 5.00 5.88
• Half angle of view: 41.19 13.40 4.25
• Image height: 21.64 21.64 21.64 mm
• Lens length: 165.57 210.57 255.57 mm

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

• 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