Unverified82% confidenceDecision RuleTime unknown
选购要看R9值（红色显色）而非仅看Ra，R9＜0，肤色和食物会发灰发暗；优质灯具R9应≥50，摄影/化妆场景需R9≥90
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82%
Confidence
Long-term
Relevance
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Unverified显色指数选购看Ra与R9双指标：Ra≥95仅代表整体平均显色，但R9（饱和红色显色）常被单独拉低，绘画、化妆、看肤色场景需R9≥90，普通照明R9≥50即可92% similarUnverified选购全光谱灯泡应认准显色指数Ra≥95且R9（红色还原）≥90，普通LED的R9常低于50，导致肤色、食物、木材偏灰暗失真88% similarUnverified显色指数应关注Ra（R1-R8平均）和R9（饱和红色）双指标，Ra≥95但R9＜50仍会导致肤色、食物、木质发暗，真正的全光谱应R9≥9088% similarUnverified显色指数选Ra≥90，且特别关注R9（红色显色）≥50，很多台灯Ra虚标达标但R9极低，导致看纸质书和肤色偏暗失真87% similarUnverified追求真实还原色彩（如绘画、化妆、看诊）需选Ra≥95且R9（红色还原）≥90的灯泡，普通全光谱灯常标Ra≥95但R9只有50-70，红色物体仍偏暗发灰87% similar
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