Re: why doesn't Canon release a camcorder with the same chip as the 5D?
 

It all depends on the kind of shooting. A full-frame videocamera for film shooting works perfectly with still photo lenses, as this kind of shooting almost never requires zooms. So I agree with Chris that making a full-frame true videolens ( with 12 or 20 times zoom) would cost an arm and a leg, but on the other hand, if Canon would have made a videocam with the 5D-chip, they would have taken the market share that Sony and Panasonic now have with the F3 and the likes.