Just received two wide-angle eyepieces for Gus (my Nikon fieldscope 82ED,
http://www.opticsplanet.net/nikon-spottingscope-fieldscope-82mm.html) With the zoom I already own, it should make a nice set. Will the two fixed power eyepieces do anything that the zoom won't? Not really. They may be a touch sharper than the zoom, but I could probably get by just fine with the zoom alone. So why did I buy them?
Because I'm addicted to optics, that's why. What could be better than razor sharp images in a Nikon Fieldscope III with a 25-75x zoom? Why, wide-angle, razor sharp images in a Nikon Fieldscope III, of course. Can't wait to put the wide-angle 30x on the star clouds of Sagittarius and the 75x wide angle on M13. Hope I don't faint!