Patent: Canon Curved Aperture Diaphragm
By| January 27, 2014
Here’s another patent filing picked up by egami:
Patent Publication No. 2014-13363,2014-13365
If I’m reading this correctly, if the aperture follows the curvature of the glass you end up by saving some space which can lead to more compact lenses, if not for the M line, than perhaps we’ll see some smaller EF-S lenses.