PENTAX XF eyepieces offer high-refraction, low-dispersion lanthanum glass elements to provide high-resolution images with minimal aberrations. PENTAX-original smc full-surface multi-layer coated optics reduce glare while providing maximum light transmission and color quality. Advanced computer simulation design technology was developed to reduce internal reflections, producing brighter, clearer images. Ideal for observation and photography of planets.
With JIS Class 4 weatherproof construction, the XF eyepieces are more durable and water resistant.
With a focal length of 8.5mm, the high-performance PENTAX XF 8.5 eyepiece is ideal for outdoor viewing and bird watching. It is also recommended for use with astronomical telescopes with 1 1/4" focuser. As a standard unifocal eyepiece it offers a 60 degree apparent field of view, long eye relief, and bright, high-contrast images.
The rotatable eyecup offers an adaptor-mounting screw/thread when removed (single-focus models: 30.5mm in diameter with a 0.5mm pitch; zoom: 43mm in diameter with a 0.75mm pitch).
Compatible with the following: PF-65 and PF-65 ED II series spotting scopes, PF-80 series spotting scopes, PF-100 series spotting scopes.
|Product name||PENTAX PF-100ED||PENTAX PF-80EDA||PENTAX PF-80ED||PENTAX PR-80EDA||PENTAX PR-65EDA||PENTAX PF-65ED(A)II|
|Real Field of View||0.8°||0.95°||1.0°||1.1°||1.4°||1.3°|
|Apparent Field of View||60°||60°||60°||60°||60°||60°|
|Field of View at 1000m||14m||16.5m||17m||18m||23m||22m|