The Metabones Canon EF to Sony NEX Camera Lens Adapter (Mark III) features true electronic integration of aperture diaphragm - let camera automatically choose aperture in P or S exposure modes
Mounted between a mirrorless camera and a SLR lens, the Metabones Canon EF Lens to Sony NEX Speed Booster increases maximum aperture by 1 stop, increases MTF and makes lens wider by a factor of 0.7
The Schneider 4.5 inch True Polarizing mounted glass filter is for cameras which use polarizing elements in the beam-splitters of the viewing system, such as ARRI 435 and the Movie-Cam Compact.
