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Hi Bill and everyone, first thanks for such a great and detailed review, as are all of your reviews. Even with the details, I still have some questions that I can't seem to find the answer to. Using your projector calculator, if I mount the projector with a throw distance of 13'3", that provides a 100" screen size, which are perfect measurements for my set up. If I understand this correctly, I wouldn't have to adjust the lens at all since I already have the desired screen size, correct? In which case, what position is the zoom lens in at any given throw distance for a given screen size according to the projector calculator? Is this a starting point and then one can use the zoom to create a smaller or bigger picture since they may be limited to throw distance but want or need a smaller or bigger picture? This detail I believe would help many people understand the light output at their distance. Thank you in advance.