Pentax XF 12 Eyepiece for Spotting Scopes 12mm 1.25 Tube. Pentax XF12 eyepieces are standard unifocal eyepieces offering a focal length 12mm and a magnification of 32.5 times respectively with a 60 degree apparent field of view and a long 18mm eye relief. PENTAX XF-12 is ideal for outdoor viewing and bird watching. It provides bright high-contrast images and features an extendible eyepiece ring with four click-stop positions. Compatibility: Pentax PF-100ED Spotting Scope Pentax PF-80ED Spotting Scope Pentax PF-80ED-A Spotting Scopes (Angled) Pentax PF-65ED Spotting Scope Straight Pentax PF-65ED-A Spotting Scope Angled Specifications for Pentax XF 12mm Eyepiece for Pentax Spotting scopes 70532: Focal length: 12mm Magnification: 32.5 Apparent field of view: 60 degree Eye relief: 18mm Package Contents: Pentax XF 12 mm Eyepiece for Pentax Spotting scopes (item)70532 Specifications for Pentax XF 12 Eyepiece for Spotting Scopes: Manufacturer: Pentax Weight: 155 g Features of Pentax XF 12 Eyepiece for Spotting Scopes With JIS Class 4 weatherproof construction the XF eyepieces are more durable and water resistant. The PENTAX XF 12 is ideal for outdoor viewing and bird watching. Designed for use with PENTAX brand spotting scopes and with astronomical telescopes with appropriate 1 1/4" focuser. 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. 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-65ED(A)II series spotting scopes PF-80 series spotting scopes PF-100 series spotting scopes. Package Contents: Pentax XF 12 Eyepiece for Spotting Scopes Pentax 70532: XF 12 Eyepiece for Spotting Scopes 12mm 1.25 Tube