If you re seeking a high-quality eyepiece that delivers exceptional clarity and detail the Pentax SMC XW 3.5mm Eyepiece is an excellent choice. Engineered to be compatible with a wide range of spotting scopes including the PF-65 PF-65 ED II series PF-80 series and PF-100 series this eyepiece also fits seamlessly into any telescope that accommodates 1.25 eyepieces. Designed for both astronomical and terrestrial viewing this versatile eyepiece delivers high magnification enabling you to explore intricate details of your subjects. The eyepiece is crafted using low-dispersion lanthanum glass arranged in a sophisticated eight elements in five groups lens configuration. This advanced design coupled with antireflection multicoatings ensures that your views remain crisp bright and free from distortion. The Pentax SMC XW 3.5mm Eyepiece stands out with its generous 70-degree field of view offering a broad and immersive viewing experience. This wide-angle eyepiece is perfect for capturing expansive landscapes or tracking celestial bodies across the night sky. Furthermore the eyepiece provides an exceptional 20mm eye relief ensuring maximum comfort for extended viewing sessions. Whether you re a seasoned astronomer or a nature enthusiast this durable and reliable eyepiece from Pentax will enhance your viewing experience delivering high-quality detailed images every time.