Richard CanonNews / Thursday, January 17, 2019 / 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: EF-M kit zoom improvements This patent application discusses a variety of kit zooms for the EF-M mount. This patent is mostly trying to achieve excellent optical performance, and a low amount of vignetting in the extremities. image pickup optical system used in an image pickup apparatus (camera), there is a demand for a zoom lens having a short overall length, a compact overall system, and high optical performance over the entire zoom range. Also, if the angle of incidence of the off-axis light beam on the image pickup element is large, shading (color shading) and lack of peripheral light amount occur, so that it is required to be a zoom lens having good telecentricity on the image side. The kit zooms mentioned in this patent application are the; 16-50mm 3.5-5.6 15-45mm 3.5-6.3 18-130mm 3.4-5.6 18-200mm 3.5-6.3 15-130mm 3.5-6.3 Japan Patent Application 2019008235 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 Canon Patent Application: Canon researching anti-static coatings for Canon RF lenses Next Article Canon Patent Application: Various Canon RF high end kit lenses Print Please login or register to post comments.