Richard CanonNews / Friday, August 10, 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: Long Eye relief optics for EVF Canon has applied for a patent for EVF optics that will provide a longer eye relief. This of course is necessary for anyone that wears glasses as a short eye relief can cause vignetting and problems in seeing the entire EVF field of view. To be honest, I find the current M5 EVF's eye relief to be a bit too short for my liking, and most EVF's I find are like this. PROBLEM TO BE SOLVED: To provide an ocular optical system having long eye relief, wide viewing angle, and high optical performance. A first lens having a positive refractive power, a second lens having a negative refractive power, a third lens having a positive refractive power, a third lens having a positive refractive power, and a third lens having a positive refractive power, which are disposed in this order from the object side to the observation side. And the fourth lens L 4, the focal length and shape of each lens are appropriately set. Canon Patent Application 2018-124349 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 Print Please login or register to post comments.