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By ET
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? ?:????????:24MM35MM??, ? ?:F1116,????AE???
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? ?:?????:85MM??,??F5.6????????AE???
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????: ??50MM?????????,?????
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????:???200MM??????????,??????????,????????
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2???????????????????20MM???????.
3?????????.
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???????????5500K??????6500K????4500K??????2800K?
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??18?????
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