Richard CanonNews / Thursday, May 31, 2018 / Categories: Canon Patents This post may contain affiliate links(s). An affiliate link means I may earn advertising/referral fees if you make a purchase through my link, without any additional cost to you. It helps to keep this site afloat. Thank you in advance for your support. If you like what we do here, maybe buy me a coffee. Canon Patent Application: New anti-reflective layers demonstrated on a 400mm 2.8 This patent application is possibly beyond our pay grade to read through, however the high level summary is that it's a new anti-reflective coating that is designed to reduce ghosting and flare on elements designed to correct the color of light as it passes through the lens. The lens in which they show in the embodiment is a 400mm 2.8. In this case the film is applied to 101, 102 and 103 surfaces. Focal Length 390.06 F number 2.8 Half angle of View 3.17 Image Height 21.64 Lens length 365.06 BF 67.53 US Patent Application 20180149773 As with all patent applications this may not come to fruition, or in the case of small improvements, many of them may be combined to form the next generation of super telephoto lenses. Richard CanonNewsRichard CanonNews Richard has been using Canon cameras since the 1990s, with his first being the now legendary EOS-3. Since then, Richard has continued to use Canon cameras and now focuses mostly on infrared photography. Richard is the founder and editor of CanonNews since 2017, and has worked as a writer on CanonRumors and other websites in the past. Other posts by Richard CanonNews Contact author Facebook page Previous Article Product Advisory Canon 70D Error 70 and 80 Next Article Canon patent application: A new type of stacked sensor design Print Please login or register to post comments.