Leica's Visoflex telephoto — the Telyt 200mm f/4.5, a reflex-housing screw-mount long lens.
The Telyt 200mm f/4.5 is a long telephoto for the Leica system that works through the Visoflex reflex housing rather than the rangefinder. Dating from the mid-1930s, it extended the reach of the screw-mount Leica far beyond the rangefinder-coupled lenses by using a mirror box that turns the camera into an effective single-lens reflex.
This is a manual-focus Leica Thread Mount telephoto with a 200mm focal length and a maximum aperture of f/4.5. It is a reflex-housing lens: it is not rangefinder-coupled and is focused and composed through the Visoflex mirror box rather than the camera's rangefinder. Confirm that the correct Visoflex housing and any focusing mount are present, as the lens needs them to function.
At 200mm this served distance work such as wildlife, sport and events where the rangefinder could not focus a lens this long. Because it is used reflex through the Visoflex, composition is direct through the lens, and the moderate f/4.5 aperture keeps the assembly manageable for a telephoto of this reach.
Values are collector-driven and depend on having a complete, matching Visoflex system rather than the lens head alone. Inspect the elements for haze, cleaning marks and separation, check coating wear on any coated examples, and confirm smooth focus and dry aperture blades; verify the housing and mount are the correct type. The system adapts to Leica M via a 39-to-M adapter and to mirrorless with an L39 adapter, where reflex focusing translates naturally to a live-view screen.