A new Canon patent application (P2018-106021A) discloses the design for quite an unusual APS-C lens for mirrorless cameras: It’s a 16-60mm f/2.0-5.0 lens. The lens is surprisingly fast at the wide end and comparatively slow at the long end. I don’t think I ever saw such a fast aperture on any Canon patent yet.
A patent is not a guarantee they will ever make this lens for real. But it shows they are playing with the idea to try out something new.
via Hi-Lows-Note