Canon patent application reveals optical designs for three F2.8 ultra-wide RF mount lenses

A new patent application from Canon has revealed the company is working to develop a trio of ultra-wide lenses for its RF mount mirrorless cameras. First seen by Canon News, the patent application details the optical designs for a 12mm F2.8 lens, a 14mm F2.8 lens and a 20mm F2.8 lens. Typically, these patent applications show off multiple optical designs that don't always make it to market, but Canon has both a 14mm F2.8 and 20mm F2.8 lens for its EF mount cameras, so it'd make sense to carry th...