In high light situations the screen grows brighter, in low light it grows darker. It also features an ambient light sensor, this is the second time we've seen this technology on a laptop, which automatically sets the brightness of the screen depending on your surrounding light. Despite this, text is sharp and readable, the extra screen real estate is a boon for those working with CAD, 3D, design or video. The 15.4-inch matte screen is high resolution, weighing in at 1,920x1,200, a resolution usually reserved for 24-inch stand-alone monitors. Dell uses an ALPS-branded trackpad here, although the competing Synaptics solution and software offers a considerable advantage. You either have scroll zones, or none at all, as opposed to turning off just horizontal or vertical scroll. Like other trackpad software, Dell allows you to set the scroll zones, but the functionality is nowhere near as customisable as that offered by other vendors, only allowing you to set them to "narrow", "normal" and "wide". On the negative side, we often found when using the trackpad that when our finger would stray across the horizontal scroll area the cursor would completely stop and switch to horizontal scroll mode, interrupting our efforts. Another trick is using the left-hand side of the control pad in a similar way to the scroll zone in order to magnify the screen. It's a handy trick that makes life a little easier for those super-long documents. A few useful trackpad extras we haven't seen before have crept in here through Dell's own software - one being circular scrolling, a technique that allows you to run your finger in a circle either clockwise or counter clockwise for continuous, unbroken scrolling.
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