We’ve just got wind of some potentially game-changing optical designs from Canon, revealed in patent P2026067609. The patent details optical formulas for three highly anticipated RF lenses, giving us a fascinating glimpse into the future of Canon’s mirrorless lineup. Here’s a breakdown of what the patent suggests:
RF 130mm F1.8 IS USM: The Ultimate Portrait Prime?
The 130mm f/1.8 design points to a lens that could re-define portrait photography on the RF system. For users who find the 85mm primes too wide and 200mm primes too long, this focal length is a perfect middle ground.
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Key Detail: The f/1.8 aperture combined with the longer focal length suggests an incredible ability to compress the background and generate creamier bokeh than anything currently available at that range, especially with the potential inclusion of Diffractive Optics (DO) to manage its size.
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Specifications: The patent details an optical formula of 14 elements in 9 groups, featuring significant aspherical elements to control chromatic and spherical aberrations at wide apertures. It also mentions an Image Stabilizer (IS) system and Ultra Sonic Motor (USM), suggesting superb autofocus performance for this specialty prime.
RF 300mm F2.8 L IS USM: Professional Sports and Wildlife Workhorse
The f/2.8 lens is a crucial piece of glass for many professional shooters. While Canon has already released an RF 300mm f/2.8 L IS USM, this patent shows Canon is still actively iterating on fast telephoto designs, looking for improvements in size, weight, and edge-to-edge sharpness.
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Key Detail: As an L-series lens, we can expect the highest build and image quality standards, and this new formula (17 elements in 13 groups) looks designed to maximize contrast and micro-contrast, making it an ideal choice for fast-action sports and wildlife photography in challenging lighting conditions.
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Specifications: The patent includes several fluorite and UD elements to minimize the purple fringing that can often plague telephoto lenses. Image Stabilization (IS) and USM are standard here, ensuring that it remains the go-to lens for professional assignments demanding both speed and versatility.
RF 500mm F5.6 IS USM: The Super-Telephoto for Everyone
Perhaps the most intriguing part of the patent is the 500mm f/5.6. Following the success of the EF 400mm f/5.6L and the new era of high-performance f/11 super-telephotos, this lens could be a major breakthrough in compact, long-range optics.
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Key Detail: A 500mm f/5.6 is a lens that many photographers would love to own, offering serious reach in a relatively portable package. This patent points to Canon using innovative design principles to keep the lens light and maneuverable without sacrificing significant light-gathering ability.
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Specifications: This formula is surprisingly compact for its focal length, utilizing an optical structure of 15 elements in 10 groups, and is a strong candidate for incorporating Canon’s Diffractive Optics (DO) technology, which significantly reduces chromatic aberrations and lens size. Image Stabilization (IS) and USM are included, making it highly suitable for hand-held wildlife and aviation photography.
The Future of RF Optics
While patents are never a guarantee that a lens will enter production, P2026067609 shows that Canon is focused on innovating across the spectrum, from portrait primers and professional sports glass to making super-telephoto lenses more accessible than ever. We’ll be keeping a close eye on these designs and will bring you any news of their development.
What do you think of these potential lens options? Would you pick up a 130mm f/1.8, a refreshed 300mm f/2.8, or a compact 500mm f/5.6? Let us know in the comments below!
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via j-platpat