EF 3 Mounting Adapter

Based on the active locking mount of the EF Mounting Adapter II, the all-new EF 3 Mounting Adapter is designed with the traditional DSLR lens rotation method but with significant improvements. Compared to the previous version, EF 3 Mounting Adapter not only uses the traditional clockwise lens rotation, but also retains active locking to fasten the lens, thus EF lenses can be installed quickly and locked clockwise just like PL lenses — ideal for follow focus use during shooting.

EF 3 Mounting Adapter features:

1. Traditional DSLR lens locking method: rotate the lens clockwise until stop;
2. Cine camera active locking method: lock the lens clockwise until fastened firmly without any play;
3. Hot-swap: change lenses while the camera is on; provides extra electrical protection;
4. Electronic contacts: supports most EF lenses with iris control;
5. Simple and reliable connection: the new mounting adapter matches KineMOUNT perfectly without any cord;
6. Lightweight: only 200g, yet still reliable and robust.

How to install/detach EF lens to EF 3 mount?

Steps to install EF lens to the new EF 3 mount:

1. Unlock: Rotate locking ring of EF 3 mount counter-clockwise till stop to remove cap from lens mount;
2. Install EF lens: Align the red dot on lens, white line on locking ring and dot on mount. Make sure the pin on mount matches the hole of lens; rotate EF lens clockwise till release button up;
3. Lock: Rotate locking ring of EF 3 mount clockwise as the arrow direction until fastened firmly.

Steps of detaching EF lens from new EF 3 mount:

1. Unlock: Rotate locking ring of EF 3 mount counter-clockwise till stop;
2. Detach EF lens: Fully press the release button on the right side of EF 3 mount and rotate EF lens counter-clockwise.