• The Pentax SMC XW 3.5mm eyepiece offers a 70° apparent field of view and 20mm eye relief, ensuring immersive, expansive views with guaranteed comfort, especially for eyeglass wearers.
• Crafted with high-refraction ED lanthanum glass elements, the eyepiece minimizes optical aberrations and preserves sharp detail. Its 8-element, 5-group configuration helps eliminate spherical aberration, producing uniformly sharp images across the entire field of view.
• Featuring multi-coated layers that provide more than 90% light transmission across the visible spectrum, with an exceptional 96% peak at 550nm, enhancing brightness and image clarity.
• With the help of computer simulation, a light-shielding diaphragm is precisely positioned within the eyepiece to minimize unwanted reflections and stray light, improving contrast and overall image quality.
• The Pentax XW eyepieces are designed with a JIS Class 4 weatherproof rating, ensuring durability in various conditions, though they are not waterproof and should not be submerged in water.
• Comes with a standard 1-year manufacturer warranty.

The Pentax SMC XW 3.5mm eyepiece has wide angle viewing with an apparent 70° field of view and comfortable 20mm eye relief, ensuring both immersive expansive views of celestial gems and guaranteed comfortable use, especially for observers wearing eyeglasses.

The Pentax XW 3.5mm Eyepiece is constructed with rocksolid high performance optics, utilizing high refraction ED lanthanum glass elements thus keeping aberrations virtually non existent and retaining sharp detail. With an 8 element 5 group configuration, secondarily, the eyepiece optics remedies the spherical aberration of the pupil to create a more uniform sharp image throughout the entire field of view. When the multi coated layers are added to the equation, it results in >90% light transmission among the visible bandpass, reaching a peak of 96% at 550nm.

A extraordinary design of the XW Pentax Eyepieces is with the assistance of computer simulation, a light shielding diaphragm is inserted into the optimal location in the eyepiece, thus making unwanted reflections and stray obsolete.

The Pentax XW Eyepieces consist of JIS Class 4 weatherproof design. Please note they are not waterproof or intended to be submerged into liquid.

Comes with standard manufacturer 1 year warranty.