It’s big, it’s bulky … but it’s worth it. That was rapidly reached conclusion for Pentax PF-100ED Spotting Scope with Field Case / with Zoom Eyepiece. The Pentax PF-100ED Spotting Scopes feature a large 100mm objective lens for bright viewing under all light conditions. Featuring a straight-line optical barrel design, extra low dispersion (ED) optics incorporating Lanthanum Crown glass elements and waterproof construction, the Pentax PF-100ED Spotting Scopes with Field Case /with Zoom Eyepiece provides durability and optimum optical resolution.
An optional accessory, Zoom Eyepiece is available for this Pentax Spotting Scope. Zoom Eyepiece features a magnification range of 20-60X, an apparent field of view of 38 to 60 degrees, and an eye relief of 20mm. Like all Pentax Zoom Eyepiece, it is renowned for its outstanding image reproduction. With its JIS Class 6 rated waterproof and fog proof construction, this Zoom eyepiece is ideal for use with astronomical telescopes.