A patent showing an EF/EF-S adaptor for a full frame mirrorless from Canon has appeared. There is a switch on the adaptor to go between EF and EF-S lenses.
Patent Publication No. 2015-118208 (Google Translated)
- Published 2015.6.25
- Filing date 2013.12.18
- Flange back is shorter body
- Flange back is long, a lens having the same image circle as the image pickup device body
- Flange back is long, a lens with a smaller image circle than the image pickup device body
- Mount adapter to change the diameter of the flare cut stop, depending on the image circle of mounting the lens