Industar-22 50mm F3.5 lens, L39 mount - Model: Industar-22 50mm F3.5 - Lens Mount: L39 - Accessories: SONY lens cap, L39/E mount adapter This is a collapsible old lens made in the former Soviet Union. It's from the 1950s, and due to amateur storage, no optical performance is guaranteed. The aperture mechanism is also quite stiff. A sample image is included in the 10th photo for reference. Please understand that this is an old, used item before purchasing. #lens #cameralens #oldlens #collapsible #retro Maximum aperture...2.9〜4 Other features...Old lens Focal length...19〜70mm