Auto Exaktar branded portrait lens made by Kuribayashi Petri (C.C series) with formidable reputation. No issues. Clean glass (also internally) gives optimal image quality, tested Sony A7 full frame. Lens is de-clicked by default thus also interesting for video usage. Satisfaction guaranteed. Adapted Nikon:https://www.ebay.com/itm/266386442158 Worldwide Shipping: International Signed For, Priority and Tracking. Please check my other listings .de since they are not visible .com. Subscribe if interested in quality, uncommon vintage lenses or cameras. EU buyers: You don't wish to pay high US$ to EUR conversion fees, i can list .de with price in EUR currency.