The Optimo Ultra 12X S35 & U35 Spherical Lens Kit from Angenieux includes S35, U35, and large-format FF/VV interchangeable rear optics lenses. The S35 lens, designed for feature films, TV series, and commercials, features IRO technology for 31.1mm configuration and can be used with U35 and FF/VV lenses. Each lens includes front and rear caps, a focus ring, a zoom ring, an iris ring, a fixed marker, and a fixed marker cover.