Richard CanonNews / Wednesday, December 27, 2017 / 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. A flurry of super telephoto patent applications appear Japan Patent Application 2017-215495 This patent appears to be two fold, lightweight (relatively here!) with a good correction of aberrations such as axis chromatic and chromatic aberrations of due to magnification. This element design most likely has IS, it's simply not labelled by Canon. 400mm 2.8 300mm 2.8 500mm 4.0 Japan Patent Application 2017-215494 Reduction of chromatic abberrations and secondary spectra (specific type of chromatic aberrations) are reduced in this patent. This element design most likely has IS, it's simply not labelled by Canon. 400mm 2.8 500mm 4.0 600mm 4.0 800mm 5.6 Japan Patent Application 2017-215493 DIfferent technique to reduce aberrations such as axis chromatic and chromatic aberrations of due to magnification. This element design most likely has IS, it's simply not labelled by Canon. 300mm 2.8 400mm 2.8 500mm 4.0 600mm 4.0 800mm 5.6 Japan Patent Application 2017-215492 DIfferent technique to reduce aberrations such as axis chromatic and chromatic aberrations of due to magnification. This element design most likely has IS, it's simply not labelled by Canon. 300mm 2.8 400mm 2.8 500mm 4.0 600mm 4.0 800mm 5.6 Japan Patent Application 2017-215491 This application changes the element location for focus to reduce weight, and also to reduct chromatic aberrations. This element design does not have IS, which probably makes it exploritory or defensive in nature. 400mm 2.8 800mm 5.6 200mm 2.0 All of these patent applications do not explicited mention IS. However in most of canon's lens designs, this element grouping is the IS group. On these respective patents, you can clearly see that element group in most of these lens group diagrams on the individual patent applications, it's simply not labelled as IS. 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 New patent application for a variety of high end APS-C UWA zoom lenses Next Article Canon leads the way in Japan for Patent Applications Print Tags: Patents Please login or register to post comments.