With a focal length of 8.5mm, the high-performance PENTAX XF 8.5 eyepiece is ideal for outdoor viewing and bird watching. As a standard unifocal eyepiece it offers a 60 degree apparent field of view, long eye relief, and bright, high-contrast images
XF 12 Eyepiece for PF-65ED Spotting Scope - The PENTAX XF12 is ideal for outdoor viewing and bird watching. This high-performance unifocal eyepiece offers a focal length of 12mm, provides bright, high-contrast images, and features an extendible eyepiece ring with four click-stop positions.
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