A few people have questioned whether the center-weightedness of the Color Parrot offers any advantage. I have previously shown basic examples of this. Here is another very basic example. This one should be easily repeatable by those who wish to embark on such matters.
These shots are taken with a slightly modified version of the Color Parrot v1.1 which has an even narrower angle of coverage, but you can find a similar effect with v1.0.
I will try to get up some more real world examples of this soon on the new site. This is to just go ahead and give everyone a quick feel of how this might be helpful in mixed lighting situations.
Above you can see the basic two light setup. I have taken a standard tungsten bulb for the backlight and added a warming gel to push it even more toward the warm end of the spectrum. The "key light" is a bank of daylight balanced fluorescent lights with a leftover swath of blue gel taped to the front. Hey, I didn't say it was elegant.
The second image shows the camera position at angle 2. I neglected to grab a photo of camera angle 1, but it was just to the right of angle 2. If it were a person, it would be left side of the face and right side of the face.
As you can clearly see above, the Color Parrot does a much better job of measuring the reflected light. It lends much less weight to the orange backlight. The other non-targeted white balance diffuser gathers light from a much wider angle and therefore puts the emphasis on the bright backlight. This means the front face of the object is way off color. It clearly is not balanced for the strong blue light hitting the face of the object.
Click on any of the images to see a larger size image and the huge difference in color temperature circled on the top right of the screen grab.
You can easily see the same effect here. The front face of the object should appear white, not blue.
Of course, all of the above shots were taken in "reflective mode" by pointing the two devices at the subjects. We could have also attempted to use the "incident method" by pointing the diffuser at the dominant light source. But, which one is the dominant light source? And how would you get to it if you were on the floor and the stage is up above you?