“Having tried mobile LED Projectors in the past and not been that impressed, we were more than pleasantly surprised by what Optoma has managed to achieve with the ML550. Not only is it tiny and very portable (we’ve got bigger digital cameras!), it also delivers the goods both in terms of brightness and picture clarity. Indeed, it compares well against conventional projectors with higher ratings than the 500 lumens quoted. Add to that extensive options for PC-free presentations, including built in viewers for Office and other popular document formats, and you have a real little projector powerhouse, literally, in the palm of your hand.”



“The ML550 is lighter than the 3M MP410, at 14 ounces by itself or 1 pound 3 ounces with its power block. It’s also a touch smaller, at 1.5 by 4.1 by 4.2 inches (HWD). And, of course, it’s brighter too.”

“Optoma ships the ML550 with a soft carrying case that’s large enough for the projector and power block as well as the included cable and credit-card size remote. Also helping make the projector even more portable is that you can read files directly from the 1.5GB internal memory, from USB memory keys, or from microSD cards.”


Review: Optoma ML550 Projector Is Portable Perfection

The days of lugging a heavy projector to meetings are over thanks to the Optoma ML550 mobile projector.

End-User Advantages

Measuring just 1.5 x 4.1 x 4.2 inches, the Optoma ML550 looks more like a MiFi device than an LED projector. By itself, the ML550 weighs under a pound at 14.1 ounces, and even with the power adapter and carrying case, it’s still under two pounds.

Want to leave your notebook at the office? Simply plug in a USB thumb drive or microSD card and select a file to present. The projector supports Microsoft Office documents, as well as .avi, .divx, .mpeg, .mp4, .mov, and .wmv videos. You can also point to a folder full of of .JPG or .BMP files to show a slideshow.

Connect the ML550 to a computer or external video source via a supplied universal input/output connector that allows for standard VGA input or an HDMI port (cable not provided). The projector supports an impressive number of video resolutions, from standard VGA (640×480 pixels) to SXGA (1280×1024) to WSXGA+ (1680×1050). Images look best in its native WXGA (1280×800) resolution, however, and video compatibility ranges from 480i to 1080i/p.

ML550’s picture is clear and crisp, owing in part to a 10,000-to-1 contrast ratio. Although the LED lamp’s brightness is just 500 lumens, projections are quite visible in typical office environments. Focus is easily adjusted with a rotating slider near the lens that also autocorrects keystone effects fairly well.


“It’s expensive, but a wide range of ports and bright bulb make this one of the best ultraportable projectors so far.”“The ML550 has a fantastic range of inputs round the back and it caters for those who don’t want to carry a laptop with them extremely well.”“…we think the ML550 justifies the extra expense as it not only connects to a far greater range of devices, but it can also be used in all types of lighting conditions.”“The Optoma ML550 is one of the smallest DLP projectors we’ve ever seen. Weighing a mere 380g and measuring just 39x105x106mm”