Canon Patent: 24-70mm f/4, 28-200mm f/2.8-5.6, 20-60mm f/2.8-4 And 50mm f/1.4 (composite opticals)
A new Canon patent application for RF-mount lenses with composite optical elements. Canon patent 2024039231 (Japan, published 3/22/2024) discusses optical formulas and methods for four lenses with composite optical elements:…