Coderguy - thanks for all your effort in putting together this great tool. As a newbie, who is still trying to make a decision on his first projector, I am confused about the scale showing throw distance versus zoom. I thought that the closer to the screen you mount the projector the lower the zoom ratio you would use. Stated differently, if you mount the projector at 10 feet from the screen, I thought that would require the lens be set to the "wider angle" end of the zoom, versus mounting at 15 feet. However, your calculator seems to show the exact opposite. Namely, the closer I move the projector to the screen, the higher the zoom setting to be used. For reference, I was looking at the specs on the Epson 5010. Any clarification would be appreciated.