We’re obviously going to get an RF L macro lens sooner than later, and Canon News has uncovered another patent showing various optical formulas for such a lens. Canon RF 65mm f/2.8 Focal length: 65.13mm F number : 2.92 Angle of view: 18.38° Image height: 21.64mm Lens length: 135.78mm Backfocus: 21.40mm Canon RF 90mm f/2.8 … Continue reading Patent: Optical formulas for Canon RF macro lenses