Canon RF Supertelephoto Lenses with built-in Extenders Appear in Latest Patent
In this patent application (2025-028297), Canon discusses super-telephoto prime lenses with built-in…
The Canon 300mm f/1.8, a Lens We Didn’t Know Existed
PetaPixel has posted a nice piece about a Canon PE 300mm f/1.8…
Nikon to Announce 200-500mm Lens?
A few patents showing optical formulas for a 200-500mm lens from Nikon…
Patent: 600 f/4 DO IS & 400 f/2.8 DO IS
Patent Time! More diffractive optic patents from Canon. This time, another 600…
