Canon has filed a patent describing multiple ultra-fast lens optical layouts using a three-group design concept, with the goal of improving autofocus speed while keeping lens designs more compact. Across the patent, Canon presents a set of different optical arrangements—described as variations on what is possible with a 3-group lens approach—intended to reduce size in fast wide lens categories and to increase autofocus performance “all else equal.” One report notes that the patent includes 21 optical designs presented as examples of the broader concept, referencing Japan Patent 2026-122508. Another outlet characterizes the filing as significant primarily for what it indicates about Canon’s development priorities: that separating lens elements into three groups may support faster focusing behavior compared with other designs under comparable conditions. Neither source indicates that specific consumer lenses are confirmed or imminent; instead, the patents describe technical possibilities and design explorations. The disclosures therefore point to ongoing R&D in optical engineering for autofocus speed and compactness rather than an announced product lineup.