Unverified82% confidenceDecision RuleTime unknown
跟焦马达选购需确认电机扭矩：定焦手动镜头对焦阻尼小，0.3N·m即可；电影镜头或带齿圈变焦环阻力大，需≥0.5N·m扭矩马达，否则会丢步跑焦
1
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82%
Confidence
Long-term
Relevance
-
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