Pentax Okular XF 6,5-19,5mm Zoom

High-performance, exceptional value eyepiece exclusively designed for Pentax spotting scopesDesigned for use with Pentax PF 65 series spotting scopes, provides 20-60× magnification when used with them. Also recommended for use with astronomical telescopes with 1 14" focuser. It has weatherproof construction for greater durability. Pentax smc full-surface multi-layer coated optics reduce glare while providing maximum light transmission and color quality. It's made of high-refraction, low dispersion lanthanum glass to provide high resolution images with minimal aberrations. In addition, advanced computer simulation design technology was used to reduce internal reflections, producing brighter, clearer images. The smc XF 6,5-19 mm has a rubber eyepiece ring designed for viewing comfort.Compatible with the PF-65 and PF-65 ED II series spotting scopes, PF-80 series spotting scopes and PF-100 series spotting scopes.Pentax PF-65ED(A)II Magnification: 20-60× Real Field of View: 2,1°-1.0° Apparent Field of View: 42°60° Field of View at 1000m: 37-17 m Exit Pupil: 3.2-1.1 mm Eye Relief: 11 mm15 mm Pentax PR-65EDA Magnification: 19-57× Real Field of View: 2.2°-1.1° Apparent Field of View: 42°60° Field of View at 1000m: 38-18 m Exit Pupil: 3.4-1.1 mm Eye Relief: 11 mm15 mm Pentax PR-80EDA Magnification: 25-74× Real Field of View: 1.7°-0.8° Apparent Field of View: 42°60° Field of View at 1000m: 28-15 m Exit Pupil: 3.2-1.1 mm Eye Relief: 11 mm15 mm Pentax PF-80ED Magnification: 26-78× Real Field of View: 1.6°-0.8° Apparent Field of View: 42°60° Field of View at 1000m: 28-14 m Exit Pupil: 3.0-1.0 mm Eye Relief: 11 mm15 mm Pentax PF-80EDA Magnification: 27-81× Real Field of View: 1.6°-0.75° Apparent Field of View: 42°60° Field of View at 1000m: 28-13 m Exit Pupil: 3.0-1.0 mm Eye Relief: 11 mm15 mm Pentax PF-100ED Magnification: 32.5-97.5× Real Field of View: 1.3°-0.65° Apparent Field of View: 42°60° Field of View at 1000m: 22.5-11 m Exit Pupil: 3.0-1.0 mm Eye Relief: 11 mm15 mm