EF 3 Mounting Adapter w/ e-ND

Based on active locking mount as EF II series adapters, whole-new EF 3 Mounting Adapter w/ e-ND is designed in accordance with traditional DSLR lens rotation method but have much improvement. Compared to the previous version, EF 3 Mounting Adapter w/ e-ND not only possesses the traditional way to rotate the lens clockwise, but also keeps active locking to fasten the lens, thus the EF lens can be installed quickly and locked clockwise as the PL lens, which is suitable for the utilization of Follow Focus when shooting.

EF 3 Mounting Adapter w/ e-ND features:

Bring Optics and Electronic into One

The Mounting adapter with Built-in Electronic ND (e-ND) employs high-precision hybrid of liquid crystal material, optics and electronic technology. It covers the widest range from 0.6 to 2.1(2 stops to 7 stops).

At the same time, it remains consistent color accuracy over such wide range when working with MAVO/TERRA.

Integrate e-ND into mounting adapter, it means no optical ND filter needed in front of lenses, therefore no need of filter holder or even matte box, which reduces loads of shooting system greatly: more compact and lightweight, and also smoother operating. So it is very good for one-man band, documentary shots, shooting at harsh environments, like North and South Polar areas.

Mounting adapter with e-ND keeps MAVO/TERRA lightweight and compact, again.

At the same time, the cine-style mounting adapter has electronic contacts to control EF lenses aperture by wheel on camera or SideGrip.

Color Accuracy over Whole Range

More importantly, MAVO/TERRA can sense the e-ND and calibrate it over potential minor color shift automatically, as soon as the mounting adapter with e-ND being attached to MAVO/TERRA. Then no matter monitoring or recorded footages, MAVO/TERRA can always maintain color accuracy over the whole tuning range from 0.6 to 2.1.

For optical ND or other glass ND, camera can not detect or get any information from ND glass, and there is no way for the camera to calibrate color shift that ND introduces. However, for mounting adapter with e-ND, MAVO/TERRA can detect the e-ND automatically, and get the status of e-ND on every slight adjustment operation on e-ND, and then calibrate any potential minor color shift based on the data received. Don’t worry about the color effect when using e-ND on MAVO/TERRA, let cinematographers focus on shooting.

Continuous Adjustment over Range of 0.6~2.1

E-ND developed by Kinefinity is built on high-precision hybrid of liquid crystal material, optics and electronic control system. It covers such wide range from 0.6 to 2.1 (2 stops to 7 stops), you can use the single e-ND for shooting even in Polar areas. Smoothly and seamlessly changing the filter density is realized by wheel on MAVO/TERRA and internal firmware, no need any extra power supply or mechanical devices.

Compared to optical glasses like NiSi cine IRND filters, it needs 0.6(2 stops), 0.9(3 stops), 1.2(2 stops), 1.5(5 stops), 1.8(6 stops), 2.1(7 stops) total six glass filters. The cost and storage cost would be fairly high. Of course, you may need to add multiple glasses to get more stops.

Seamless adjustment brings an very important feature: accurate exposure stop, this is what traditional glass ND filters don't have, and MAVO/TERRA could get best dynamic range, depth of field while remaining ISO, shutter speed and lens iris unchanged.

It takes much less time but reduces error on trial to get right exposure, because no need to replace optical glasses manually piece by piece.

Attention: Power down camera when swapping different adapters, else camera or adapters may be burned.

How to Attach/detach the EF lens to the EF 3 mount?

Steps of attaching EF lens to new EF 3 mount as following:

• Unlock: Rotate locking ring of EF 3 mount counter-clockwise till stop; (Take off all the caps or covers from camera and lens mount;);
• Install EF lens: Align red dot on lens, white line on locking ring and dot on mount. And make sure that the pin on mount matches the hole of lens; rotate EF lens clockwise till release button up;
• 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: