This zoon eyepiece have a widefield on the 6MM position it's 60 degrees and is very well corrected. I just got it and it's in perfect condition. The eyerelieve is about 10MM and that's why I'm selling this eyepiece. No recommended for people that wear glasses. Orion's price for this eyepiece is $169.00 and the Orion's Vixen goes for $149.00.