Metabones Canon EF to Sony NEX Speed Booster Adds Full Frame Versatility in the Crop Sensor Video World

Metabones Canon EF to Sony NEX Speed Booster Adds Full Frame Versatility in the Crop Sensor Video World

Make No Bones About It: the Metabones Adapter is Kind of Amazing The Metabones Canon EF to Sony NEX Speed Booster allows you to mount any Canon EF-mount lens onto compatible Sony NEX E-mount cameras, such as the Sony FS-700, Sony FS-100, or Sony Alpha NEX- 7. What makes this simple adapter anything but simple is its ability to increase your maximum aperture and make your lens 0.71x wider! Think of this adapter as being the opposite of a teleconverter. A teleconverter expands the image being projected onto your camera’s sensor, giving us a telephoto crop but also losing light in the process. Teleconverters are popular among nature and outdoor sports photographers who need the extra reach and don’t mind losing a little light to get it.  The Metabones Speed Booster, conversely, narrows the image being projected onto the sensor. The image then fills the cropped sensor similarly to how the lens would fill a full frame sensor. The resulting image is still slightly cropped, but less so than if you were just shooting with the crop sensor alone and no adapter. Does It Really Work? When comparing a Sony video camera using a standard Metabones adapter (which only allows Canon EF lenses to be mounted on Sony NEX cameras with no additional changes) against the Metabones Speed Booster, our video team did notice a significant change in field of view.  For example, they put a 50mm EF lens on an E-Mount Sony camera, which has a 1.6x crop factor. This essentially makes that 50mm lens read like an 80mm lens.  When using the Speed Booster, that “80mm” lens was “widened” by a factor of 0.71x, which makes...