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CanonNews / Sunday, February 4, 2018 / Categories: Canon Patents Another supertelephoto patent surfaces We have discovered another supertelephoto patent application from Canon, this one dealing with further reduction of chromatic abberations and axial CA The lens designs don't specifically have IS elements marked, but does feature element groups that canon usually uses for IS. The supertelephoto's listed in this patent application are; 300 2.8 400 2.8 500 4.0 600 4.0 800 5.6 Japan Patent Application 2018-018101 Previous Article Canon Broadcast Lenses at the Superbowl Next Article Photography Blog: Canon Macro Twin Lite MT-26EX-RT Review Print Tags: Patents Canon Please enable JavaScript to view the comments powered by Disqus.blog comments powered by Disqus