第五版1980- 1995黑色镜，镜筒上刻有“50”字样，重新加上了对焦杆，没有内置遮光罩。
Fifth version 1980-95 Black lens with "50" on barrel, reintroduced focusing lever, without built in hood.
第五版1980- 1995黑色镜，镜筒上刻有“50”字样，重新加上了对焦杆，没有内置遮光罩。
Fifth version 1980-95 Black lens with "50" on barrel, reintroduced focusing lever, without built in hood.
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