Some Canon Power Zoom patents were found for a Canon 15-30mm F4-6.3 PZ, 20-50mm F4-5.6 PZ, and 12-30mm F4-6.3 PZ. overview [Publication number] P2024091148 [Release date] 2024-07-04 [Title of Invention] Optical device and imaging device [Application date] 2022-12-23 [Applicant] [Identification number] 000001007 [Name or company name] Canon Inc. An optical device capable of appropriately controlling … Continue reading Canon Power Zoom Patents: Canon 15-30mm F4-6.3 PZ, 20-50mm F4-5.6 PZ, and 12-30mm F4-6.3 PZ With Internal Zoom