Unverified83% confidenceTradeoffTime unknown
显色指数越高（Ra95+/高R9）往往牺牲发光效率，同瓦数流明更低更耗电；一般居家Ra90+已足够，Ra95+适合专业辨色需求
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83%
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Long-term
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Unverified显色指数越高（Ra97、R9高）通常发光效率越低，同等亮度需更高功率、发热更大且价格更贵；非专业用途Ra95已足够，无需盲目追求Ra9891% similarUnverified显色指数越高，发光效率越低、单瓦亮度越暗，Ra97比Ra95亮度损失明显；除非从事美术、印刷、珠宝鉴定等专业工作，日常家用Ra95已足够且更亮更省90% similarUnverified高显色（Ra95）与高亮度往往难兼得：追求Ra95以上的灯珠发光效率较低，同功率下亮度略降，日常读写Ra90+已足够，无需盲目追求Ra9890% similarUnverified高显色（Ra95+）与高亮度往往难以兼得：高显色LED光效偏低，同功率下亮度会打折，追求亮度可接受Ra90，追求还原度需适当加大功率90% similarUnverified高显色(Ra95+)与高光效通常矛盾：同功率下高显色灯珠光通量更低更暗，追求极致亮度和极致显色不可兼得，普通家用取Ra90+光效100lm/W左右为平衡点89% similar
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