Leica offered a wide range of accessories. For instance, LTM (screwmount) lenses were easily usable on M cameras via an adapter. Similarly Visoflex lenses could be used on the Leicaflex and R cameras with an adapter. Furthermore, certain LTM and M rangefinder lenses featured removable optical groups that could mount via adapters on the Visoflex system, thus making them usable as rangefinder or SLR lenses for Visoflex-equipped Screwmount and M rangefinder cameras, as well as being usable on Leicaflex and R cameras. Leica also offered focusing systems, such as the Focorapid and Televit, that could replace certain lenses’ helicoid mounts for sports and natural-life telephotography.