Vixen manufactures their fine-quality LanthanumEyepiece series in two variations - the 'standard' and the Lanthanum Wide variants. Both lineups have multicoatings upon every air-to-glass surface within the eyepiece, and do so at a comparative value versus other premium units in the marketplace.
The broad 2" 50 Lantanum NLV ocular is meant to be the lowest-magnification, widest true field eyepiece in your stable. With its supreme eye relief it will be comfortable for any user, and also works well for eyepiece projection applications.
As an NLV unit, this eyepiece has the newer style turning-type eyecup.
Helicoid-type, soft rubber eyecup
Fantastic eye relief for both eyeglass observing & eyepiece projection photography