Richard / Thursday, February 28, 2019 / Categories: Canon Patents Canon Patent Application: Defocus Smoothing EF Primes During the Canon interviews with Imaging-Resource Canon discussed how they created the 85mm 1.2 DS lens where instead of an actual element, they use a specific coating on an element to form the apodization. Yes. It uses basically the same technology as apodization. There are several manufacturers that have apodization lenses, but our approach to apodization is slightly different. What we do is we use coating technology to make the apodization. This patent application shows us lenses with this apodization for a variety of different lenses, interestingly enough they don't look like RF lenses. They have an incredibly large back focus (39.70mm). Either these are old designs or something with apodization forces Canon from using a larger, closer to the sensor element. So while these could be for the RF mount, we really can't say if they are solely for the RF mount or EF and RF lenses. The large back focus 28mm is certainly an EF lens. Our degree of confidence that these are RF lenses are extremely low. Canon RF/EF 34mm 1.4Canon EF 28mm 2.8Canon RF/EF 85mm 1.2 US Patent Application 20190064472 Previous Article Canon Patent Application: Super Telephoto primes Next Article New Canon RF lenses on display at CP+ Print 3711 Tags: Canon Patent Application Related articles Patent Application: Lens Auto-Aperture Control Patent Application for Canon RF 16-28mm F2.8, 16-28mm F2.8-4 and 16-28mm F4 designs Canon Patent Application: High Magnification Super Telephoto Zooms Canon Patent Application: Curious Catadioptric Optical System Canon Patent Application: Drone Camera Assembly Please login or register to post comments.