Amazon.com : Pentax DA 50-200mm f/4-5.6 ED Lens for Pentax and Samsung DSLR Cameras : Camera Lenses : Electronics
Amazon.com : Pentax Q10 Mirrorless Digital Camera with 3-Inch LCD zoom lens kit 12.4MP (RED) (OLD MODEL) : Compact System Digital Cameras : Electronics
Pentax (lens) - Wikipedia
Pentax 35mm DA L f/2.4 AL Lens 21987 B&H Photo Video