[KongchangAI]
Unverified95% confidenceCautionTime unknown

恒定f/4光圈在弱光环境和需要强烈背景虚化的场景(如室内体育、婚礼仪式、暗光人像)下不如f/2.8镜头,对这些场景有刚需的用户应考虑70-200 f/2.8 GM II

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95%
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Long-term
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