To optimize the performance of the PF-65ED/EDA 65mm ED Spotting Scopes, PENTAX has developed three compact, high-performance XF-series eyepieces, all featuring a bright, high-contrast image, an American-standard 31.7mm sleeve and focal lengths ideal for outdoor viewing and bird watching.
The smc PENTAX XF Zoom Eyepiece 6.5mm-19.5mm features a focal-length range of 6.5mm to 19.5mm for a magnification of 20 to 60 times, with an apparent field of view of 42 to 60 degrees and an eye relief of 11mm to 15mm. It also offers a user-friendly rubber eyepiece ring to minimize the risk of scratching the observer's eyeglasses.
Reviewed by 1 customers
A very good eyepiece but not as good as the xw zoom eyepiece. If you are looking for small and lightweight, this will work fine. But the heavier and longer XW eyepiece has a better eye relief and is clearer and brighter.