Expand the focal length and convert your B4-mount 2/3" lens when using it on an S16, 2K, or 2.5K sensor-size camera with this HDX1.4 B4 to PL Mount UMS 1.4x Optical Converter from IBE OPTICS. The converter supports high-resolution imagery while optically correcting the 3-chip image format for use on Super16/2K-sized sensors with up to a 16mm image circle. It is designed to magnify your focal length by 1.4x.
The converter features minimal optical degradation while expanding the focal length and decreasing the image brightness by 1 stop. To create an optimized optical design for modern lenses and digital cameras, the maximum input is T1.9. The HDX1.4 is designed to mount a PL lens on any digital cinema camera with a native PL mount, and the UMS lens mount system allows you to interchange the camera mount with optional Canon EF, Nikon F, Sony E, or MFT mounts to fit a wide range of cameras.