Canon 1Dx with the light-swallower-85-1.2 L II mounted
Canon's newly announced lenses
Canon Telephotos at the Canon Booth
Canon 200-400-f-1.4-TC-Inbuilt
Canon 200-400-f-1.4-TC-Inbuilt - Controls Close-up incl. 1.4TC lever
A quick hands-on report with the Canon 200-400 f/4 1.4 TC by Psycho_McCrazy:
Super-Fast AF, as expected from a canon super-telephoto, even with the 5D mk2 it was mounted on (or rather the camera was mounted on it)
To me, the AF seemed to hunt a bit when the 1.4x TC was engaged, but then it was on a 5D2 with low light of the hall and people at various distances walking by (this lens was away from the regular canon telephoto testing area - it as on ground level rather than elevated). I am sure that with a worthy body, the AF will be top notch even with the TC engaged.
Canon EF400-IS-II Cutout
Canon EF500-IS-II Cutout
Canon EF600-IS-II Cutout
Above images are by Psycho_McCrazy, the rest by Jeff Chen: