Angenieux Optimo Ultra 12X 

The Optimo Ultra 12X S35 - U35 Spherical Lens Kit from Angenieux includes the S35 and U35 lenses, along with the large-format FF/VV (full-frame/Vista Vision) interchangeable rear optics modular lens.
The S35 lens is a long-range zoom designed for use in feature films, TV series, live stage commercials, and similar productions. It features an optical and mechanical design and the IRO technology
which allows you to configure it to 31.1mm. Additionally, you can configure the lens with the U35 and FF/VV lenses. Each lens is constructed with front and rear caps along with a focus ring, zoom ring, iris ring, fixed marker, and a fixed marker cover.