Category Archives: Patents

Canon RF 14mm f/1.4L VCM, RF 18mm f/1.4L VCM, and RF 35mm f/1.8 Patents Found

By Louis Ferreira | Published: March 17, 2026

Canon patent P2026043301 has been found, which covers Canon 14mm f/1.4, 18mm f/1.4, and 35mm f/1.8 lenses. Below is a summary of the patent; you can also view it here on j-platpat. Patent Analysis: Canon P2026-043301 Details New 14mm f/1.4, 18mm f/1.4, and 35mm f/1.8 RF Primes Canon’s latest patent application out of Japan, P2026-043301 […]

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Patent Application Reveals Canon 28-45mm F1.2 and 35-70mm F1.4

By Louis Ferreira | Published: February 27, 2026

Patent Application Reveals Canon 28-45mm F1.2 and 35-70mm F1.4! A new patent application, P2026033938, has surfaced, hinting at two incredibly exciting, and dare I say, ambitious, lenses from Canon: a 28-45mm F1.2 L USM and a 35-70mm F1.4 L USM. If these lenses ever make it to production, they would be the world’s first full-frame […]

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Patent Reveal: Canon’s Motorized Built-in Extender – The End of the Lever?

By Louis Ferreira | Published: January 15, 2026

Patent Reveal: Canon’s Motorized Built-in Extender – The End of the Lever? Recent patent applications from Canon have revealed a fascinating new direction for their super-telephoto lenses: a motorized built-in extender. While lenses like the EF 200-400mm f/4L IS USM have featured a mechanical lever for engaging an internal 1.4x extender, Canon seems to be […]

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Canon Patent Application P2026004077: RF 35mm f/1.2, 40mm f/1.5, and 30mm f/1.2 Found

By Louis Ferreira | Published: January 14, 2026

Canon Patent Application P2026004077 has been found, and it details the optical formulas for three very fast wide-angle prime lenses: a 35mm f/1.2, a 40mm f/1.5, and a 30mm f/1.2. The RF 35mm f/1.2L USM has been one of the most rumored and requested lenses since the inception of the RF mount. While we have […]

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Canon Patent Reveals Possible RF 300mm f/2.0L and RF 200mm f/1.8L Lenses

By Louis Ferreira | Published: December 11, 2025
Technical illustration of Canon lens patents showing cross-sections for a 300mm f/2.0 and a 200mm f/1.8.

Canon Patent Reveals Possible RF 300mm f/2.0L and RF 200mm f/1.8L Lenses A recent patent application by Canon (JP-2025-179579) has surfaced, detailing optical formulas for two incredibly fast super-telephoto prime lenses: a 300mm f/2.0 and a 200mm f/1.8. These specs will be familiar to long-time Canon shooters. The EF 200mm f/1.8L USM, affectionately known as […]

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Canon Might Have Solved The Heat vs. IBIS Paradox

By Louis Ferreira | Published: December 9, 2025

For years, camera engineers have faced a massive design conflict, one we like to call the Heat vs. IBIS Paradox. On one hand, you want a powerful sensor that can shoot 8K video and high frame rates. This generates an immense amount of heat that needs to be moved away quickly to prevent the camera […]

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