Canon Patent: 20mm f/1.8, 28mm f/1.8 And 24mm f/1.8 With Backlight Control
A new Canon patent for RF mount lenses: 20mm f/1.8, 28mm f/1.8 and 24mm f/1.8. Canon patent application 2022122047 (Japan) discusses optical formulas for three RF mount lenses with backlight…