Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Expensive & Way too Small

Nikon usually puts out a quality product, but this eyepiece magnifier is not one of them. The small viewing area defeats any benefit of added magnification. By the way, this originally fit the round eyepieces of the F series cameras.{That should tip you off, it's about 20+ year old technology}. You need an adapter piece to fit the rectangular eyepieces of the DSLR'sIf you do buy it remember that you must focus it by turning the eyepiece lubber part). Never mind, Don't buy this.