How projector throw ratio works
Use lens distance divided by image width, understand ratio ranges, and avoid substituting screen diagonal for width.
Read articleFormula before mounting
Projector throw-ratio guides
Learn the formula, convert diagonal to width, and keep the model manual in control of final placement.
Convert projector screen diagonal to width
Derive image width and height from diagonal and aspect ratio before calculating projector distance.
Read articleWhy check the projector manual before mounting
Use throw geometry as a first filter, then verify the exact lens, focus range, reference point, and installation limits.
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