Unverified80% confidenceDecision RuleTime unknown
低亮度下的调光平顺度和无频闪同样关键：便宜的PWM调光灯在1%~10%低亮区间会闪烁或跳档，拍高速快门/慢动作会出现横纹，需选支持高频无频闪调光的灯
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Unverified带亮度调节应做到0-100%无级调光且低亮度不频闪，廉价灯低亮度档常出现PWM频闪，慢门或高帧率拍摄会出现横纹92% similarUnverifiedPWM调光（脉宽调制）在低亮度档易产生频闪，DC恒流调光全亮度范围无频闪但成本更高；预算有限时优先保证常用亮度档无频闪即可89% similarUnverified看重护眼选无频闪认证（不闪烁或频闪深度＜5%）+ 显色指数Ra≥90，低价氛围灯常用PWM低频调光在低亮度档位出现明显频闪89% similarUnverified调光平滑度与低亮度闪烁存在矛盾，廉价PWM调光灯泡在10%以下低亮度时频闪严重，长期使用易视疲劳；用于卧室夜灯应选支持低亮度无频闪或高频PWM（>3000Hz）的产品89% similarUnverified调光方式优先选0-100%无级线性调光且低亮度无频闪的型号，PWM调光在低亮度下拍摄可能出现横纹，选高频PWM(≥25000Hz)或DC调光可避免89% similar
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