Pentax SMC-FA 645 45mm f/2.8  lens. Serial # 4189650. Made in Japan. This Auto or manual focusing macro lens will fit Pentax 645 AF camera's or Pentax 645 manual focus camera's. Lens stops range is f/2.8 - f/22. Close focus down to 1.5 foot or 0.45 meter. Lens has slide on focus barrel for manual or auto focus operation. Lens uses 67mm filters. Lens is Mint/Mint- or 9.5 of 10 cosmetic condition. Black finish, paint and scales are super nice. No dents or dings. Perfect glass. Clean front and rear elements. Very nice multicoating. No coating marks, scratches or separation. Smooth focusing. Clean and smooth diaphragm. The Pentax lenses have been known for their quality optics with good sharpness and contrast. Make this extra wide angle part of your Pentax 645 system. Lens comes original Pentax Lens Hood, front and rear caps. Sells with NO RESERVE at a price of $525. I have more Pentax lenses and accessories, Medium Format, Large Format cameras and Lenses, Vintage and Collectibles and Soft Focus Lenses. More great buys on my other auctions, Ebay Store and Web Page.