Video DSLRs vs Camcorders

The convergence of stills and video continues. An increasing number of DSLRs now have video capability. The first were theNikon D90andCanon 5DMKII, both introduced in 2008. The first half of 2009 has now seen theCanon Rebel T1i (500D),Nikon D5000, Panasonic GH1,andPentax K7introduced.
While this site's primary focus is still-image making in all its forms, the convergence movement on the part of the camera industry requires that attention also be paid to video and video making. While there is reluctance on the part of many amateurs to adopt this blending of image making disciplines, many pros have embraced video as a new means of revenue generation, not to mention creative expression. And for creative amateurs it's becoming clear that things don't have to be aneither / ordecision; a great many leading photographic artists have also been filmmakers, such asRobert Frank,Henri Cartier-Bresson, andGordon Parks, to name just a few.
Since we expect that just about every DSLR introduced from...