Canon filed patents for 400-600mm F2.8-4, 300-600mm F2.8-4.5, and 70-300mm F4 lenses. overview [Publication number] P2024101302 [Release date] 2024-07-29 [Name of invention] Zoom lens and imaging device and imaging system having the same [Application date] 2023-01-17 [Applicant] [Identification number] 000001007 [Name or company name] Canon Inc. A zoom lens that is small in size and […]