Unverified88% confidenceCautionTime unknown
等效约45mm的焦距在室内空间较小时会显得偏长，拍摄室内全景或多人合影时取景范围不够宽，需要退后较远距离
1
Sources
88%
Confidence
Long-term
Relevance
-
First Seen
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Unverified长焦机型投射比约1.27:1，投100寸画面需要约2.7米距离，客厅纵深不足3米的小户型难以发挥大屏优势81% similarUnverified长焦机型需要较大投距，客厅进深不足3米的小户型难以投出大画面，不如考虑超短焦方案79% similarUnverified投射比适合中大客厅，投100寸画面大约需要2.5-2.7米左右的投距，小空间难以投出大画面，购买前需确认实际可用距离77% similarUnverified玄关或过道等狭窄空间选择长条形全身镜，宽度≥40cm可完整照全身，高度建议150cm以上；小于35cm宽会导致成像不全需后退站立77% 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77% similar
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