Unverified80% confidenceDecision RuleTime unknown
投射比（throw ratio）决定投影距离：投射比1.2的机器投100寸需约2.6米距离，小户型或帐篷内空间不足时应选投射比≤1.2的短焦机型
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Long-term
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Unverified投影距离与画面尺寸受投射比决定：投射比1.2的机器投100英寸约需2.6米，小户型（客厅进深＜3米）应选投射比≤1.2或支持超短焦87% similarUnverified投影比（throw ratio）决定所需距离，1.2:1的机型投100英寸需约2.6米，短焦(0.8:1以下)适合小房间但价格高，租房或小客厅需先量墙面距离再选投射比87% similarUnverified投影尺寸与投射比换算：投射比1.2的机器，投100英寸画面需约2.65米距离；小户型或墙距不足选投射比≤1.2或超短焦机型87% similarUnverified投影比（Throw Ratio）决定所需距离：投影比1.2:1时投100寸约需2.6米，短焦机型（0.8:1以下）可在1.5米内投大画面，卧室/租房小空间应选短焦或超短焦84% similarUnverified投影距离与画面尺寸受投射比制约，投射比1.2时投100寸约需2.7米，房间进深不足选短焦(投射比<0.8)或超短焦(投射比<0.3)机型82% similar
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