A Canon APS-C user who want to upgrade to a 6D cannot use his APS-C lenses on his new camera. In contrast, a Nikon APS-C user who wants to upgrade to a D600 can use his DX lenses on his new camera and the camera uses some sort of sensor cropping to emulate DX, at about 10.7MP. Interestingly, third party lenses (i.e., Sigma, Tamron, Tokina etc.) can be mounted on Canon FF bodies but those bodies have no way or recognizing them as not being FF lenses.
Do suppose Canon regrets introducing the entire EF-S lens concept?
Do suppose Canon regrets introducing the entire EF-S lens concept?