Draper’s Projection Planner provides the levels of sophistication and accuracy necessary to calculate both projection system brightness and system contrast. Using InfoComm’s PISCR standard as a baseline, the Projection Planner walks the designer through a series of precise questions— including seating distance, image size, the type of information being projected; ambient light levels at the screen and in the room; and the projector’s format, lumens, contrast ratio, and throw distance—to build a complete system profile. The Projection Planner then calculates system brightness and contrast, and recommends specific projection viewing surfaces that will perform best in actual room conditions. Free with login.
http://www.draperinc.com/draperpro/login.aspx
