THIS IS THE PINNACLE OF ZOOM EYEPIECES ! Manufactured by United Optics, one of the leading manufactures in China, SmartAstronomy's 7.5mm-22.5mm Zoom eyepiece feature 8 Elements in 3 Groups, Advanced Fully Broadband Multicoatings, excellent color correction and contrast, super sharp images, and a nice wide field of view. Adjustable smooth twist-up eye cup. Dust caps, micro-cloth included. Once you use our 7.5mm-22.5mm zoom eyepiece you'll now why we call it the PINNACLE of Zoom Eyepieces ! Zoom Eyepiece Features: *Continuous focal length 7.5mm-22.5mm *66-42 degrees *8 elements 5 groups *18-19.5mm eye relief *Extra flat field of view and distortion free *Fully broadband multi-coating *Blackened lens edges (all lenses' edges and internal spacers blackened) *Internally baffled, *High glossing anodizing *Smooth twist-up eyecup *Parfocal |
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