Κωστα οποτε εσυ θες αρσενικο m48 σε βαρελακι 2" (δεν κανουν αυτα που εκανα πασα). Ναι Nose piece ειναι 2" αλλα m42 .Εσυ θες m48 αλλιως θες δαχτυλιδι ανταπτορα απο m42 σε m48 για να τα παντρεψεις μεταξυ τους. Ναι το m42 ειναι το T2. Εχει δικιο ο Αλεξ. The difference between M42x1 and T2 M42 and T2 often create confusion. Both threads have the same diameter of 42mm, but a different pitch. The M42 thread (we usually call it M42x1 to avoid confusion) has a pitch of 1mm per turn. The T2 thread has a pitch of 0.75mm per turn. The M42 thread is frequently used on old Russian cameras and lenses. The T2 thread is a common system thread for which many adaptations are available.