I believe Planar has implemented the Brilliant Color and Adaptive Contrast so well, that for those concerned about ambient light, you just might want to consider their "brightest mode" to be roughly equivalent to having 1200 lumens or so, for a brightest mode, which brings the Planar PD8150 up to about average, or a little better than average for brightest mode viewing.
One more pair, a very telling set. This is the usual image from Space Cowboys that I like to use to demonstrate shadow detail in a scene that has a lot of bright. Click on the thumbnails to see the larger, images (the thumbnails are the same). Left are with these features off, and on the right with the special features on.
As you will see, much of the workings of the satellite, are much darker on the image with the features on, that image has more "pop", but you can easily see that much of the detail is gone in those dark areas.