
Canon Patent P2026-088009: RF 16-35mm f/4 IS, 20-50mm f/4 IS, and 20-60mm f/4 IS A new Canon patent application (P2026-088009) has been published in Japan, detailing the optical formulas for three full-frame, constant-aperture standard and ultra-wide zoom lenses. The patent outlines designs for a Canon RF 16-35mm f/4 IS, an RF 20-50mm f/4 IS, and […]


