Computer with Backlight

Sigma did sell a seperate light that sat above the screen of the computer. Of the few computers I've had with backlights the light hasn't been that good, usually a single LED tucked in one corner of the display which doesn't illuminate all of the display that well. I usually wait till I'm under a streetlamp. Activating the backlight can also drain the battery and in my experience dim the display it is trying to illuminate.