Irix Cine 21mm T1.5 Full-Frame Cinema Lens
The Irix Cine 21mm T1.5 is the wide end of the fast Irix Cine primes: 79.4 degrees horizontally on full frame, opening to T1.5 so a wide shot can still separate a subject from its background. An 11-blade rounded iris keeps out-of-focus highlights circular as the lens is stopped down. Minimum focus is 0.30 m, close enough for a wide insert without a diopter.
Like the rest of the line it uses internal focusing, a 180 degree focus throw, 0.8 mod gears on focus and iris, a 95 mm front diameter and a removable 1/4 in support foot, so mounts can be swapped mid-shoot without re-rigging. The front element sits proud of the barrel, so there is no screw-in filter thread and filtration is handled with an adapter or matte box. Four rubber o-rings seal the barrel, three on PL. All SKUs listed here are the imperial (feet) focus scale.
| Image Coverage | Full frame (43.3 mm) |
|---|---|
| Focal Length | 21 mm |
| Aperture Range | T1.5 - T16 |
| Iris | 11 rounded blades |
| Minimum Focus | 0.30 m (11.81 in) |
| Field of View (horizontal) | 79.4 degrees on full frame |
| Front Diameter | 95 mm |
| Weather Sealing | 4 rubber o-rings (PL 3) |
| Focus Ring | 0.8 mod gear, 180 degree rotation |
| Aperture Ring | 0.8 mod gear, 75 degree rotation |
| Distance Scale | Imperial (feet) |
| Markings | Laser engraved, UV reactive |
| Included | Front cap, rear cap, 1/4 in lens support foot |












