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Model: PentaxXF85Part Number: 70531Brand: Pentax
The 6 element, 4 group optical design feature high-refraction, low dispersion lanthanum glass and Pentax SMC multi-layer optical coatings for bright high contrast views with neutral colour.
60 degree apparent field of view.
Long 18mm eye-relief and twist-up rubber eye-cup so suitable for use with eye-glasses.
The narrow design makes Pentax XF eyepieces especially well suited for use with binoviewers.
Weatherproof construction for greater durability.
Tried on a VIXEN BT81S-A bino-telescope, and compared to VIXEN's LV10mm views of the moon are crisp and clear. Mars can be observed with the limitation of the low magnification (given by the bino-telescope). Eye relieve is convenient and the eye-guard very practical. These EPs are very well made (fit and finish) and optically perform very well. On my bino-telescope, magnification is x56, far above the maximum magnification recommended by the manufacturer (x48) but I cannot see any severe degradation. For the price... you will not find anything better.
First Light Optics LtdUnit 7 Budlake UnitsBudlake RoadMarsh Barton Trading EstateExeter, DevonEX2 8PY
Company No. 5892293VAT No. 907 2895 01
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