Know your gear
The 144-108100-01 3.89 to 5.43:1 High-Brightness Zoom Lens from Christie is compatible with the company's Boxer 4K30 and Mirage 304K projectors. It provides a 3.89 to 5.43:1 throw ratio, allowing the distance between the projector and the screen to be approximately 3.89 to 5.43x the width of the projected image.