« on: September 18, 2012, 12:47:36 PM »
Canon might regret introducing the EF-S concept only if/when they lose large numbers of 60D sales because consumers realize that can upgrade to a Nikon D600 for about the same cost as upgrading to a 60D and they buy the Nikon instead. In contrast, a Nikon D200 user, like a nephew of mine, can purchase a D600 body only for now, can use his current lenses and can buy more lenses as finances allow. As for why he would want to "cripple" his new camera with old lenses, consider that his wife is 7 months pregnant with their first child. A D600 body alone will be financial stretch.
Then again, maybe a lot of bottom end DSLR buyers don't care about upgrade paths. From what I've seen, most of them don't even buy a second lens.
As for the M-mount, it is backward compatible with EF and EF-S lenses using the adapter. It'll be interesting to see if many current Rebel owners opt for an M when their current body breaks or becomes inadequate, but still use their old lenses.
Update: Correction - 6D, not 60D, Thanks