English USPTO patent application: US20150323764 A1
In comparing example 3 to JP,2006-153942 (I believe this is the patent that embodied by the existing EF-S 60mm f2.8 Macro), it seems quite possible that this is going to be the EF-S 60mm f/2.8 Macro II, or the EF-M 60mm f/2.8 Macro.
Comparing the distortion graphs, example 3 compares quite well to 2006-153942.
In comparing example 3 to JP,2006-153942 (I believe this is the patent that embodied by the existing EF-S 60mm f2.8 Macro), it seems quite possible that this is going to be the EF-S 60mm f/2.8 Macro II, or the EF-M 60mm f/2.8 Macro.
Comparing the distortion graphs, example 3 compares quite well to 2006-153942.
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