Xw 3. 5mm, 5mm, 7mm, 10mm, 14mm, 20mm will give a wider field of view than typical eyepieces when used on Pentax spotting scopes or with most any telescope
Fully multi-coated lenses increase light transmission and color quality
High-refraction, low-dispersion lanthanum glass elements deliver bright, high-resolution images with Minimal aberrations and distortion