great and useful features of this product:
- allows you to install EF EF mount lenses to the MFT mount or mount the camera.
- equipped with electronic variable ND filters, ranging from ND8 to ND2048.
- Several light adjustment steps
- allows you to take pictures with wide-open openings in bright light.
- expand the EF EF stand capability when you shoot with a professional Micro Four Thirds or E-mount camera.
RE: DEC Vari-ND - Wireless follow focus and camera control