... so, perhaps (going back to my original question), this new lens is all about bridging fishes and traditional ultrawides. This may be strictly a focal-length driven gap rather than a need for Canon to put out a much sharper lens. Hmmm.
That`s exactly the way I see it, yes.
"Zoom Holy Trinity" ... 11-24/4; 24-70/2.8 IS; 70-200 II or "gang of 4" with 100-400 II
[Plus 100/2.8 L IS Macro ... if one really needs it. ]
All of these zooms very sharp from fully open. basically replacing primes for everything except speed.
Only one missing will be 24-70/2.8 IS.
Actually it is the Four Horsemen of the Zoom Apocalypse
Wouldn't that be the Zoombie Apocalypse?
That would be the "my-kids-aren't-going-to-college-and-my-wife-is-divorcing me" Apocalypse.