Unverified85% confidenceCautionTime unknown
60mm口径在高倍下进光量不足，光线不好的环境（阴天、黄昏、树荫下）画面会明显偏暗，适合在光线充足的白天使用
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85%
Confidence
Long-term
Relevance
-
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Unverified21mm小口径在光线不足的环境下（如黄昏、树荫下）成像偏暗，不适合需要在弱光条件下观察的场景90% similarUnverified21mm口径进光量有限，光线不足的环境（如黄昏、树荫密林）下成像偏暗，不适合需要在弱光条件下观察的场景88% similarUnverified60mm口径在光线充足的白天观鸟表现良好，但在黄昏、阴天或林下等弱光环境中，进光量明显不如82mm/80mm级别的大口径机型，画面会偏暗且细节损失较大87% similarUnverified65mm口径在光线充足的白天观鸟表现不错，但在黄昏、阴天或林下等弱光环境下进光量明显不足，画面偏暗且细节损失较大，对弱光场景有需求应考虑80mm口径款86% similarUnverified低光环境（黄昏、密林）下表现有限，3.6mm出射瞳径在光线不足时画面偏暗，需要充足光线才能获得清晰明亮的图像86% similar
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