The Vortex Crossfire HD family of spotters delivers the powerful hunting tool you’ve been waiting for with the proven performance and reliability you expect from a Crossfire. Its wide field of view is perfect for chewing up ground in any environment. The Arca-Swiss compatible foot means out-of-the-box, mount-and-go convenience on most tripods. Delivering a variety of magnification options for any hunt, now your first spotter could be the last spotter you ever need. This model offers 12-36x magnification, a 50mm objective lens diameter, and a straight eyepiece. It has a 173 to 89 feet field of view at 1000 yards, a 3.3 to 1.7-degree an angled field of view at 1000 yards, and a 14.5 feet close focus. Finally, it offers 18mm eye relief. HD Optical System It has an HD optical system optimized with select glass elements to deliver exceptional resolution, cut chromatic aberration, and provide outstanding color fidelity, edge-to-edge sharpness, and light transmission. Fully Multi-Coated Lenses Anti-reflective coatings on all air-to-glass surfaces provide increased light transmission for greater clarity and low-light performance. Wide Field of View A wide field of view assists in quicker target acquisition. Helical Focus Helical Focus allows for fast and fine adjustments. Arca-Swiss Compatible Finally, it directly mounts to Arca-Swiss tripod heads without the use of additional plates.