Is a D-SLR a Camcorder?

The trend in digital single-lens reflex (D-SLR) cameras is to include video capabilities—very sophisticated video capabilities. Even the newest Canon consumer model (T1i, T2i) have 1080p features that rival any camcorder, and the high-end Canon and Nikon models have video quality that rivals some $20,000 dedicated video camcorders. But obviously, the form-factor is all different. D-SLRs have retained their eye-to-the-camera design, with a LCD screen on the back, dials on the top, etc. Camcorders have retained their Kleenex box proportions (although they’re a lot smaller!). D-SLRs also don’t have the audio, matte box, auxiliary lighting and other features of camcorders. As a result, those using D-SLRs for serious video work have had to plaster all sorts of accessories onto their still camera, beefing it up to camcorder standards. I just spotted this photo, taken at the 2010 Macworld of a Canon on a $2,000 trip, outfitted with an external, battery-run monitor, dual handles, wireless mic, follow-focus knob and yards of cables—yikes! Am I missing something here? Wouldn’t a decent prosumer camcorder nearly handle the same assignment? Okay, maybe the external monitor would be needed. But the quality of the video from this camera couldn’t be that much better than a camcorder, especially when you consider they’re doing stand-up interviews and not Rocky Mountain scenics.