Superseded90% confidenceTradeoffTime unknown
全画幅传感器面积约为APS-C的2.3倍，在同代技术下高感可用ISO普遍高1-2档；夜景/室内弱光为主选全画幅（如ISO 6400仍纯净），白天户外为主APS-C足够
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This knowledge claim has been superseded by newer content
全画幅传感器在ISO 3200以上的暗光噪点控制通常比APS-C好约1档，室内/夜景/婚礼摄影优先全画幅；日常旅行APS-C的高感已够用Sources
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