Samyang 14mm T3.1 Cine VDSLR ED AS UMC II is carefully designed for professional film and video works so the focus gear ring is installed for follow focus system.
You may change the aperture quietly and smoothly with the uncoupled aperture gear ring. With Manual focus, light transmission and distance scales are marked on both sides of the lens to film with precision and accuracy.
With a lightweight build and low T number which enables natural shooting under various light exposure circumstances, this lens is an excellent addition to a new and experienced videographer's alike.