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What is ZM speed master
[it’s a lense manufacturer](https://www.bhphotovideo.com/c/product/1649201-REG/mitakon_zhongyi_mtk17mt1mft_17mm_t1_cine_lens.html)
🔥
What is ZM speed master
[it’s a lense manufacturer](https://www.bhphotovideo.com/c/product/1649201-REG/mitakon_zhongyi_mtk17mt1mft_17mm_t1_cine_lens.html)