page 2.42. Installation iS15-2K Cinema Projector: User ManualDiagonal screen sizesScreen sizes are sometimes specified by their diagonal size in inches (D). Whendealing with large screens and projection distances at different aspect ratios, it ismore convenient to measure screen width (W) and height (H).The example calculations below show how to convert diagonal sizes in inches intowidth and height in inches or metres, at various aspect ratios.2.35:1 aspect ratioW = D x 0.92 in = D x .023 m H = D x 0.39 in = D x .01 m2048x1080, native resolutionW = D x 0.88 in = D x .022 m H = D x 0.47 in = D x .012 m1.85:1 aspect ratioW = D x 0.88 in = D x .022 m H = D x 0.48 in = D x .012 m16:9 aspect ratioW = D x 0.87 in = D x .022 m H = D x 0.49 in = D x .0125 m1.66:1 aspect ratioW = D x 0.86 in = D x .022 m H = D x 0.52 in = D x .013 m4:3 aspect ratioW = D x 0.8 in = D x .02 m H = D x 0.6 in = D x .015 m5:4 aspect ratioW = D x 0.78 in = D x .02 m H = D x 0.625 in = D x .016 mNotesD = diagonal (in)W = widthH = height
