This is a Samyang-made lens that comes with a PL mount. The lens has a maximum ƒ/1.5 aperture and a minimum ƒ/22.
From Amazon
XEEN Cinema 24 mm T1.5 PL Full Format Lens MF Cine Video Lens for High Resolutions with Follow Focus Sprockets
CVP
Samyang XEEN 24mm T1.5 - PL