Optoma ML500 LED Projector Review
Brightness. In its brightest mode, the ML500 came in at 431 lumens in our tests, or about 85% of its rating. I found it suitably bright for a 92" diagonal image at the 16:10 native aspect ratio in a dark room. The image can even stand up to moderate ambient light at that size, although it's a little washed out. Various other modes came in at an assortment of levels, between 307 and 344 lumens, with Eco mode dropping the level in the brightest mode by nearly 40%, to 255 lumens.
Good brightness uniformity. The ML500 also does a good job maintaining uniform brightness across the screen. I measured the uniformity at 82%. The difference was just enough to notice on a solid white screen, with a little warmer white towards the bottom. Add some graphics or text to break up the background, however, and the difference becomes impossible to see.
Connectivity. Connection options on the ML500 are another pleasant surprise, with more choices than you might expect. The available connections include a VGA port for a computer or component video source, an HDMI port for a computer or video source, both S-video and composite video ports, and a miniplug AV jack for audio or audio plus composite video in. The AV in port works with a $20 optional adaptor, with the other end plugging into the AV output minijack that you can find on many smartphones, for example.
In addition, there's an SDcard slot, a USB Type A port for a USB memory key, and a mini USB port for sending a data image from the computer as well for as transferring files to the 2GB internal memory. I tried the projector with a small sampling of file formats on a USB key, including PDF, JPG, and Microsoft Word and PowerPoint files. According to Optoma, it can also read BMP and Microsoft Excel files and most common video and audio formats, including AVI, WMV, MPEG1, WAV, WMA, and 16 more.
|Review Contents:||Overview||Key Features||Test Results||Limitations and Conclusion|