• Instant conversion of a PENTAX spotting scope into a K-mount super-telephoto lens
• High-performance five-element, four-group optics with high-grade glass optical elements for sharp, high-resolution image reproduction
• PENTAX-original multi-layer coating on all lens surfaces to optimize color balance and light transmission efficiency
• Effortless sleeve-mount system offering a focal length identical to the eyepieces for speedy transition from observation to photography
• Lightweight design (250 grams)