The Velociter x0.8 optical converter reduces the focal length of the macro lenses by 0.8x. At the same time it increases the lens speed by almost 1 stop. The Velociter x0.8 features high-index, low-dispersion glass as well as multi-layer coating to ensure the high possible resolution and contrast with minimal optical degradation. To create an optical design, that is optimized for the macro lens family and digital cameras, the maximum input T-stop is 2.9. The Velociter x0.8 can easily be assembled in exchange of the extension tube of the PL UMS mount.