This online projector calculator tool is intended as a guide to help select your projector and lens. As you use the calculator, it is important to keep in mind that all lamp-based projectors gradually lose brightness during operation. The typical ambient light values noted in the app are for example only.It is vital that you verify the actual ambient light in your venue prior to purchasing your projector. This is not intended as an app to calculate and make a purchase. A login is required for dealers, but anyone can experiment with various options to see results of changing projector, lens, lamp, and throw distance as well as compare front vs. rear projection, mounting options and other configuration choices. Free with login.
http://www.digitalprojection.com/calculator
