The Vtg Vivitar Auto Telephoto 300mm f/5.6 lens is a high-quality zoom lens designed specifically for Pentax cameras, with a maximum aperture of f/5.6. Made in Japan, this lens features auto focus and a telephoto focal length of 300mm, making it ideal for capturing distant subjects with precision. The PK mount ensures compatibility with Pentax cameras, providing photographers with a reliable and versatile lens option for their photography needs.