Voigtlander 50mm f1.5 Nokton (black rim) for LTM brand_Billingham The aperture control ring of

The aperture control ring of this lens has been modified for use with AI-compatible cameras

Doesn't look like much

The Nikon MA-1 is an AC/DC converter designed for the Nikon F-36 motor drive

nothing more nefarious

No effect on imaging

Voigtlander 50mm f1.5 Nokton (black rim) for LTM brand_Billingham The aperture control ring ofThis is an extremely rare Leica thread mount variant of the original Voigtlander 50mm f1. 5 Nokton lens. In very nice cosmetic condition, with only very minor barrel marks. Focusing is smooth, and diaphragm works well. No optical hazing, but there are a few minor internal marks and slight delamination at one edge. Shockingly few of these lenses were made, and hey, heres one now!