smc PENTAX XF 8.5

High-performance, exceptional value eyepiece exclusively designed for PENTAX Spotting Scopes.
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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.


smc PENTAX XF 8.5 Specifications and Performance in combination with PENTAX Spotting Scopes

Real Field of View0.8°0.95°1.0°1.1°1.4°1.3°
Apparent Field of View60°60°60°60°60°60°
Field of View at 1000m14m16.5m17m18m23m22m
Exit Pupil1.4mm1.3mm1.4mm1.4mm1.5m1.4mm
Eye Relief18mm18mm18mm18mm18mm18mm

Product Specifications

Article Number70531
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