Differences between Rokinon Cine vs Cine DS vs XEEN Cinema Primes 

Rokinon Cine DS Lenses: goo.gl/ErOrwS
Rokinon XEEN Cinema Primes: goo.gl/VoDXSe
Rokinon started with manual photo lenses, then added Focus gears, Iris Gears, and a de-clicked iris called the Rokinon Cine. Later they standardized the Focus and Iris Gear positions and called this the Cine DS line. The Cine DS Line also had better coatings and a more expanded line of lenses (not available in Cine). The XEEN Cine Lenses are now their most professional line which includes standard Lens Diameters, Standard Focus and Iris Gear positions, Better Housings, better tolerances (less breathing), and higher optical coatings. The XEEN Lenses also have an 11 blade iris where the Cine and Cine DS lenses only have 8.