A few months ago, Aputure released the 'DEC' Lens Adapter, which is putting a new spin on Wireless Follow Focus systems. If you're not familiar with what the Aputure DEC Lens Adapter is, take a look at my earlier video below. If you are already familiar, then skip this first video.
The DEC allows you to use a Canon EF or EF-S Autofocus lens and adapt it to a MFT (micro four-thirds) or Sony E-Mount camera. Although the camera itself can't communicate with the lens, a wireless remote will allow you to change iris (aperture) and drive focus.
This is extremely useful when working with Gimbal stabilizers when you can't physically pull focus on the lens by hand. Just clamp the wireless remote to the handle of your gimbal. The exciting news demonstrated for us at NAB 2015 is that they will have a 'DEC PRO' version which will include a 'Focal Reducer' a.k.a 'Speedbooster' optical element offering up a wider field of view and an extra stop.
The DEC PRO version will hopefully be out later this year and will be a huge asset to small sensor cameras like the BlackMagic Pocket Cinema or Micro Cinema cameras. For cameras like the the Sony A7s which already offers a full frame the speedbooster is not required.
With lens adapters, being able to change the iris on EF autofocus lenses are key. For a price even cheaper than Metabones smart adapters, there's a lot of functionality in the Aputure DEC and you can already purchase the original DEC Lens Adapter for Canon EF/EF-s to MFT or Sony E-Mount following the links below.