Samyang/XEEN 50mm T1.5 — same lens as Rokinon XEEN, different brand name listing.
The Samyang Xeen 50mm T1.5 is a cinema prime from Samyang's Xeen line (Samyang's own-brand cinema designation, parallel to the Rokinon brand), for Canon EF mount. T1.5 maximum aperture with cinema-convention mechanics and 114mm front diameter. Canon EF mount.
T1.5 maximum aperture. 50mm focal length. Canon EF mount. 114mm front outer diameter — cinema-standard. 0.8mm-pitch focus and aperture gear rings. De-clicked aperture ring. At approximately 1,200g.
The Xeen brand is Samyang's cinema marketing designation — optically and mechanically equivalent to the Rokinon Cine line under a different brand name. The 50mm T1.5 is the standard normal focal length in the Xeen/Rokinon cinema set, suited to dialogue coverage, two-shots, and general cinema narrative work. The 114mm front diameter is consistent across the Xeen set.
On the used market the Samyang Xeen 50mm T1.5 Canon EF is an affordable cinema normal prime. Condition checks: Canon EF mount contacts, iris ring de-click action, focus ring smoothness, front element and coatings. Xeen and Rokinon XEEN versions are interchangeable in a matched set (same optics, same 114mm housing). Compatible with Canon RF via EF-RF adapter.