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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 New 70-200 coming this year Next Article A couple of sensor patent applications published Print 1315 Tags: Patents Canon Please enable JavaScript to view the comments powered by Disqus.blog comments powered by Disqus