Here are the results of a Chroma key test I did using the Canon 5dmk2, 7d, Panasonic AF-100, HPX-3700, Sony EX-3, Red One MX. The footage was keyed using Keylight 2.0 for Final Cut Pro 7.
The order of the keyed footage is random.
At 1:55 I have blown up the mattes 300% to show how the different camera formats pull a key. These mattes are in order from lowest to highest quality. This section was keyed using only the screen color, leaving all parameters at their defaults to show exactly how well each format keyed without adjustments.
Also in the matte section are some results using the AJA KiPro Mini and the Convergent Designs Nanoflash.
This video is being used as part of my presentation at the Producer's Guild East meeting on 5/17/11 at Blue in Philadelphia, PA.