Old Delft's scarce Dutch wide — the Minor 35mm f/3.5 in Leica Thread Mount.
The Old Delft Minor 35mm f/3.5 in Leica Thread Mount is a vintage Dutch wide-angle from Old Delft (Oude Delft), a Netherlands optical maker, made in screw mount for L39 rangefinder bodies. It is a scarce moderate wide from a maker better known for other optical work, and it is uncommon among rangefinder glass.
It is a manual-focus rangefinder-coupled lens with a 35mm focal length and a maximum aperture of f/3.5. The moderate aperture keeps the barrel compact, and the lens couples to the rangefinder for focusing on screw-mount and adapted bodies, with 35mm frame lines or an accessory finder for composition.
The 35mm view is a flexible reportage and street angle of view, and at f/3.5 the lens suits daylight, travel and documentary shooting. It renders evenly and sharpens across the frame when stopped down to the middle apertures for general-purpose use.
As a scarce vintage Dutch optic, used copies are uncommon and should be inspected carefully for haze, fungus, cleaning marks, coating wear and separation, along with focus feel and aperture oil. Confirm rangefinder coupling and infinity focus before buying. It adapts to Leica M with an LTM-to-M ring and to mirrorless cameras via an adapter.