This Pentacon Auto 1.8 50mm camera lens is a vintage unit with multi coating and an M42 mount. It is compatible with Praktica and Pentax brands and has an auto focus type. The lens has a maximum aperture of f/1.8 and a focal length of 50mm. The Pentacon Auto 1.8 50mm camera lens is a great addition to your photography equipment and will produce high-quality photos.