Canon Patent Explores 3-Group Lens Designs for Faster AF

via Canon Rumors

Canon Patent Explores 3-Group Lens Designs for Faster AF

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Canon patent JP 2026-122508 outlines 21 optical designs built around a 3-group lens structure, with the stated goals of shrinking fast wide lenses and speeding up autofocus. No product name or release timeline attached — it's a broad concept filing.

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Canon patent autofocus lens design

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