Update: Added digital samples. Have had this AF variant lens before. It is a great lens. If you have any manner of autofocus Pentax 645 camera body (645N/645D/645Z) this lens is a no-brainer. Why? More on that below. First I will repeat the sentiment expressed in my post about the 645 75mm that applies to … Continue reading This Old Lens (Medium Format): SMC Pentax-FA 645 80-160mm F4.5