Optoma EH412ST Throw Distance Chart (Examples for common Sizes) T/R: 0.5:1. The EH412ST offers a super short 0.5:1 throw ratio making it perfect for situations where you need the Powerful 10-watt audio fills a room with loud and crisp audio to further enhance media and presentations. The EH412ST features an incredible 4,000 lumens of brightness for lights-on viewing so you can stay productive in meeting spaces and learning Medium sized environments including classrooms, meeting rooms, and conference rooms. Brightness. 4000 lumens, lights on presentations.
Optoma EH412ST. Bright Short Throw 1080p Projection. Experience massive, 1080p images from feet away with the 4,000 lumens, short throw Optoma EH412ST. Support for 4K HDR input sources, sRGB and REC.709 color profiles with a Now you can view presentations and documents, stream... The Optoma EH412ST has a short throw ratio of only .5:1. You can get a full 120" picture with just 4.5 feet of distance between the lens and screen. That's one reason why this projector is recommended as highly for classrooms and meeting spaces as it is for home theaters.