This item is an accessory. It must be rented with a non-accessory item.
This machined aluminum mount lets you use approved Canon EF and EF-S mount lenses with RED DSMC/DSMC2 brains. Key features include:
DSMC/DSMC2 brain compatible
Autofocus/iris support for compatible EF lenses
Lightweight machined aluminum w/dual-ring lock
No backfocus adjustment necessary