The IB/E Optics VVx2 UMS optical extender doubles the focal length of the RAPTOR macro lenses (*without 60mm Raptor). The VVx2 UMS features high-index, low-dispersion glass as well as multi layer coating to ensure the highest possible resolution and contrast with minimal optical degradation. In magnifying the image twofold, the transmitted light is spread over a larger area, decreasing the brightness by two f-stops. To create an optical design that is optimized for the RAPTOR macro lenses and digital cameras, the maximum input T-Stop is 2.9. The VVx2 UMS is designed to mount to any digital cinema camera with a native PL mount. It will also clear the spinning mirror on any ARRI or Aaton camera. In addition the IB/E UMS Mount System offers the ability to change the mount to Sony E, Canon EF, and others in the field without re-shimming.