Reproduction NIKKOR-S 1:1.4 f=50mm single-focus lens. - Brand: Nikon - Model Name: NIKKOR-S 1:1.4 f=50mm Nikon SC Mount (Selected Nikon F mount because the SC mount option was not available) - Country of Manufacture: Japan - Aperture: f/1.4 - f/16 - Lens Type: Single-focus - SHOTEN Leica M-Nikon SC mount adapter (Focus adjustment is not possible as is, so various digital camera AF adapters or a helicoid ring are required. I used it with a SONY α and a TECHART AF adapter.) - The lens hood spring is weak, or the previous owner seems to have fixed it, and it does not come off. - Lens filter included Thank you for viewing.