Unverified75% confidenceCautionTime unknown
预算低于中端主流的激光投影不建议买——低价激光机常在色轮、散热或算法上缩水，此价位段传统LED投影反而更均衡
1
Sources
75%
Confidence
Medium-term (~90 days)
Relevance
-
First Seen
Sources
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Unverified超短焦（激光电视）投影不要买普通白塑或标准ALR幕，超短焦大角度入射光会导致画面上下亮度不均和溢光，必须用专为超短焦设计的菲涅尔黑栅幕77% similarUnverified预算有限时不建议只买套机后长期不换镜头：套机变焦（如18-55/28-70）光圈小画质一般，把预算配一支大光圈定焦（如50mm f1.8）画质提升远大于换机身74% similarUnverified预算有限时不要为'伪4K''伪激光'等营销词加价。同价位选真实物理1080P+真实ANSI亮度达标的LED机型，远优于标称参数华丽但物理规格缩水的机型73% similarUnverified超短焦激光电视必须搭配抗光幕（黑栅/菲涅尔幕），墙面直投或普通白幕会严重损失对比度和亮度，购买时需将幕布成本计入总预算72% similarUnverified定焦镜头（如35/50mm f/1.8）比同焦段变焦光圈大2档以上、更轻更锐、价格更低，但需靠走位构图；不接受换镜或频繁移动的场景优先变焦71% similar
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