The Leica R 19mm T2.8 Elmarit rehoused from GL Optics features Leica R prime lense that have been re-housed for cinema applications. All Leica R lenses cover up to full-frame formats so without problem covers newest sensor like Vistavision from RED WEAPON 8K. Re-Housed Leica R Lenses Covers Full-Frame Format EF / PL Mount Geared Focus and Aperture Control Rings Clickless Aperture Ring 95mm Front Diameter