Award-winning photojournalist and videographer Dan Chung from
DSLR News Shooter has just posted a video shootout pitting the
Canon EOS 5D Mark III against the Nikon D800. In the interesting
and in-depth article accompanying it, Chung looks at the video
features of both cameras in detail and compares them, not only
in terms of output quality, but also usability.  Among the
factors covered are the cameras' video detail resolution,
susceptibility to moiré patterning and the extent of rolling
shutter effect. Using a range of different lenses and
accessories on both cameras, Dan also takes a detailed look at
how well each camera fits into a professional video workflow.