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Accessory type:Ring Extension TubeDiameter:55 mm58 mmF:8 mm85 mmFor Camera:CanonOlympusPentaxSigmaOther
Producer:All producersFreepowerJJCManfrottoMitakonNewellSamyangViltroxYongnuo
Price: from to
Allows to lengthen x2 lens focal length. Canon EF mount.
Doubles focal length of lens.