Overall, the contrast and resulting affect on images (primarily) but also everything else (text, presentation materials, etc.), is typical for a good business/education projector. Contrast specs are all over the place, and I mentioned contrast previously in terms of black levels. Having a laser light engine offers some ways to improve the picture in terms of contrast but this Dell doesn't take advantage. A laser engine can do black frames - that is, if the image is supposed to be black - all pixels at value 0, the laser engine can turn itself off, because it can turn off and on extremely quickly. This saves some energy,
An even better solution is to have the laser engine constantly brightening or dimming as needed in the same fashion that a dynamic iris opens and closes, which is a great way to overall lower black levels. Sure, these improvements are more beneficial to home theater use, than the average business or education application, but there are lots of specialty applications where darker richer "blacks" are desired, so having these abilities built into this Dell would have been a significant plus for some users.
Still, for normal use, no complaints.
IN the image below, the Dell is hitting the 100" Screen Innovations UST, light rejecting screen while lights are on, and plenty of light coming in from the large window. In such situations, ambient light washes out the bulk of the difference between projectors with great vs. typical real world contrast.