Prompted by Tony's recent post on upgrading his 40D.
As I think most of us know, Canon's premier L series lenses are, by definition, made to fit all current bodies. Therefore, they have to work with Full Frame cameras.
However, it seems to me that Canon could quite easily offer lenses built to the same optical and mechanical quality as their L series (including weather sealing, and so on). Such lenses would be lighter, perhaps easier to design, and cheaper (since their elements would be smaller if they only had to cover a crop sensor).
Presumably, Canon don't see a market there. However, with the quality now being delivered through crop frame cameras, like the 70D, being a fair bit "better" them full frames of only a few years ago, I'm not sure.
I would certainly be interested in a "EF-S" lens built to L series quality.
Would anyone else out there be interested?
Dave