Category Archives: Patents

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

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

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

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

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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Canon Still Has Some Cameras Coming

Canon still has a few camera registrations for cameras that haven’t been launched yet. You can find a list of them below, along with what cameras they might be, and generated images of them above. Unknown Camera Registrations DS126936 Wireless Spec: Wi-Fi 5 (802.11ac) + Bluetooth What it might be: Canon EOS R7 Mark II. […]

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Canon 200-500mm f/5.6 Patent Found

Canon has been turning out lens patents at a blistering pace. Just the other day, I did a post of numerous patents, and now there is one more. overview [Publication number] P2025150145 [Release date] 2025-10-09 [Title of invention] Zoom lens and imaging device [Application date] 2024-03-27 [Applicant] [Identification number] 000001007 [Name] Canon Inc. A zoom […]

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