Another option in Sigma's High-Speed Zoom line of cinema lenses, the 50-100mm has a constant max. aperture of T2.0 and covers S35 sensors. It features the same build characteristics as Sigma's Cine Primes, including easy-to-read witness marks and smoothly firm barrel rotation. Weighing only 4 pounds, this lightweight zoom features minimal flares and ghosting, and the durable metal build is both dust- and splash-proof.