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.
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 (640x480 pixels) to SXGA (1280x1024) to WSXGA+ (1680x1050). Images look best in its native WXGA (1280x800) 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.