What’s most exciting about having a full frame DSLR shooting HD video is the ability to use the full range of lenses and focal lengths that are available. Folks who don’t shoot video may not appreciate the challenge that shooting digital video entails. The sensors are small (digicam small) and therefore focal lengths are commensurately short as well. This means depth of field – lots of depth of field – far more than one usually wants. In cinema one wants to direct the viewers attention to a certain subject within the frame, and this is often done through the use of selective focus.
To this end videographers have been using somewhat klugy devices that allow mounting SLR lenses onto the the camera lens, focusing both on an intermediate ground glass. This works, but it’s bulky and expensive. I can see that people wanting to have narrow focus for scenes in their videos will now flock to the 5D MKII and similar cameras for this purpose alone, if not anything else.
