Unverified85% confidenceDecision RuleTime unknown
室外监控优先选4MP（2560×1440）而非1080P，4MP在看清车牌、人脸细节上明显更清晰，且录像存储成本增幅可控；4K仅在超大场景或需要电子变焦裁切时才必要
1
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85%
Confidence
Long-term
Relevance
-
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Unverified识别车牌需要2K以上分辨率且摄像头距车道≤10米；单纯监控院子人形活动1080P足够，盲目上4K会大幅增加存储和带宽成本84% similarUnverified监护类摄像头分辨率选2K（300万像素）为宜，1080P在识别药盒、体温计读数等细节时不足；4K会大幅增加云存储费用和带宽压力，性价比反而低79% similarUnverified分辨率越高、常显屏越大越耗电，2K全屏机型体验好但需频繁充电；单纯居家安防2K+事件录制已足够，无需追求4K79% similarUnverified看清人脸/门牌需分辨率2K（300万像素）以上，1080P仅能识别有无人形轮廓；4K在家用监控中提升有限但显著增加带宽和存储成本78% similarUnverified看清人脸/车牌需2K（400万）以上分辨率；1080P在10米外只能看清轮廓无法辨认细节，庭院/门口取证场景建议4K77% similar
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