The ARRI Ultra Prime 100mm T1.9 is a PL-mounted prime lens that covers the Super-35 format. The 100mm is a longer entry in the comprehensive array of Ultra Prime focal lengths from 8mm to 180mm. The Ultra Primes provide a compact, lightweight, opticallymatched complement to the higher-speed ARRI Master Prime series. Compatible with both HD and film cameras, the Ultra Primes are color matched to each other and to the rest of the ARRI lens spectrum.