Genuine Pentax eye cup installing metal ring for the 645, 645n, and the 645Z medium format film cameras. Made by Pentax Japan. This part has been discontinued. Limited stock available.
Genuine Pentax replacement aperture coupling ring for the ZX Series including  ZX10, ZX30, ZX-M, ZX5, and the ZX5n film cameras. Made by Pentax Japan.
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