This is Carl Zeiss Jena Flektogon 35mm f/2.8 lens converted to Arri PL mount, probably from genuine M42 screw mount. Lens has 'hard mount', not lens adapter and it focus to infinity. Optically in really good condition, no deep scratches, separations or fungus, but it is a bit foggy inside, like it has some slight haze. Because it is old lens, it can have like two/three cleaning marks, few marks/spots on coatings or some dust in inside optical construction. Mechanically lens works really good, focus ring is very smooth. Aperture ring works smooth and fine too, but a bit loose, like with no grease on it. Aperture blades with no grease on them, clean, they close to f/16, not f/22, but i do not think it is an issue here. Visually as on pictures, good condition, with normal to hard signs of use, but no serious damages on casing. This is 'as is' auction, so no returns or exchanges, all sales are final. Price 249.99 USD or 'best offer' price. This is 'as is' auction, so no returns or exchanges, all sales are final. I'm also not an expert in lenses, so i've described them the best, i could. Thank you !